JPH02281211A - Optical collimator and optical coupling parts - Google Patents
Optical collimator and optical coupling partsInfo
- Publication number
- JPH02281211A JPH02281211A JP10265589A JP10265589A JPH02281211A JP H02281211 A JPH02281211 A JP H02281211A JP 10265589 A JP10265589 A JP 10265589A JP 10265589 A JP10265589 A JP 10265589A JP H02281211 A JPH02281211 A JP H02281211A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- lens
- optical fiber
- collimator
- polarized light
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 76
- 230000008878 coupling Effects 0.000 title claims abstract description 19
- 238000010168 coupling process Methods 0.000 title claims abstract description 19
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 50
- 239000013078 crystal Substances 0.000 claims description 24
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000010287 polarization Effects 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 238000005253 cladding Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、光ファイバから出力した光を光ビームとして
空間に飛ばし、偏光の選択や波長の選択など光学的な変
化を加えたのち再び他の光ファイバに光学結合する光コ
リメータおよび光コリメータを用いた光結合部品に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to emitting light output from an optical fiber into space as a light beam, applying optical changes such as polarization selection and wavelength selection, and then transmitting it again to other light beams. The present invention relates to an optical collimator optically coupled to a fiber and an optical coupling component using the optical collimator.
従来の技術
従来、この種の光コリメータを使用した光結合部品は第
4図に示す構成であった。第4図において、41は光フ
ァイバ 42は光ファイバのコア、43は光ファイバの
クラッド、44はレンズ、45はレンズ端面、46はレ
ンズ球面、47はレンズクラッドである。2. Description of the Related Art Conventionally, an optical coupling component using this type of optical collimator has a configuration shown in FIG. In FIG. 4, 41 is an optical fiber, 42 is a core of the optical fiber, 43 is a cladding of the optical fiber, 44 is a lens, 45 is a lens end face, 46 is a spherical lens surface, and 47 is a lens cladding.
レンズ44はコア径が単一モード光ファイバより大きな
光ファイバの端面を球面加工してレンズ端面46として
いる。レンズ端面45はレンズ44の中心軸に直交して
いる。単一モード光ファイバ41のクラッド43はレン
ズクラッド47と同じ外径なので、精密スリーブ48を
用いてレンズ44と光ファイバ41の光軸を一致させて
る。The lens 44 is formed by processing the end face of an optical fiber having a core diameter larger than that of a single mode optical fiber into a spherical surface to form a lens end face 46 . The lens end face 45 is perpendicular to the central axis of the lens 44. Since the cladding 43 of the single mode optical fiber 41 has the same outer diameter as the lens cladding 47, a precision sleeve 48 is used to align the optical axes of the lens 44 and the optical fiber 41.
光ファイバ41のコア42を伝搬した光はレンズ44の
球面46で平行光に変換されて出力される。(特開昭6
3−38909)
発明が解決しようとする課題
このような従来の構成では、レンズ44と光ファイバ4
1を接続しているので、このような光コリメータを用い
゛C光結合部品を構成すると、光ファイバ41への光入
力、または光ファイバ41からの光出力など光ファイバ
41と光学結合するために光コネクタなどの部品を使用
しなければならない。このために光コリメータは小さ(
でも光結合部品は太き(、また、部品数が多いために光
結合部品が高価になると言う問題があった。The light propagated through the core 42 of the optical fiber 41 is converted into parallel light by the spherical surface 46 of the lens 44 and output. (Unexamined Japanese Patent Publication No. 6
3-38909) Problems to be Solved by the Invention In such a conventional configuration, the lens 44 and the optical fiber 4
1 is connected, so if such an optical collimator is used to configure the optical coupling component C, it will be possible to input light to the optical fiber 41, output light from the optical fiber 41, etc. in order to optically couple with the optical fiber 41. Components such as optical connectors must be used. For this reason, the optical collimator is small (
However, there was a problem that the optical coupling parts were thick (and also had a large number of parts, making them expensive).
本発明はこのような課題を解決するもので、光コリメー
タに接続機能を持たせ、部品数の少ない光コネクタ接続
型の光コリメータおよび光コネクタ接続型の光コリメー
タを用いた光結合部品を提供するものである。The present invention solves these problems by providing an optical collimator with a connection function and providing an optical connector-connected optical collimator with a small number of parts and an optical coupling component using the optical connector-connected optical collimator. It is something.
課題を解決するための手段
1個のレンズとこのレンズと中心軸を一致して整列した
1本の光ファイバと、前記レンズおよび前記光ファイバ
を挿入、固定する孔を持つ固定部材と、前記固定部材と
光コネクタを突き合わせ接続する割りスリーブから構成
し、光フアイバコネクタを着脱できる用にしたものであ
る。Means for Solving the Problems: one lens, one optical fiber aligned with the central axis coinciding with the lens, a fixing member having a hole into which the lens and the optical fiber are inserted and fixed, and the fixing member. It consists of a split sleeve that butts and connects a member and an optical connector, and allows the optical fiber connector to be attached and detached.
作用
光コリメータに接続機能を持たせ、少ない部品で光コネ
クタ接続型光コリメータを構成しているので、光結合部
品をコンパクトでしかも使いやすくすることができるこ
ととなる。Since the working light collimator has a connection function and the optical connector-connected optical collimator is configured with a small number of parts, the optical coupling part can be made compact and easy to use.
実施例
第1図は本発明の一実施例による光コリメータの構成を
示すものである。第1図はにおいて、1はロッドレンズ
、2は光ファイバ、3はレンズ固定部材、4は割りスリ
ーブ止め、5は割りスリーブ、6は割りスリーブの引っ
掛かり部、7は空気孔、8は接着剤である。Embodiment FIG. 1 shows the structure of an optical collimator according to an embodiment of the present invention. In Figure 1, 1 is a rod lens, 2 is an optical fiber, 3 is a lens fixing member, 4 is a split sleeve stopper, 5 is a split sleeve, 6 is a hook part of the split sleeve, 7 is an air hole, and 8 is an adhesive It is.
セラミックでできたレンズ固定部材3の直径2mmより
わずかに大きな孔に接着剤を少量流し込んだ後、直径2
mm、0.25ピツチの集束性ロッドレンズ1を挿入
する。その後レンズ固定部材3の反対側から直径126
μmの孔にコア径80μm、外径125μmの光ファイ
バ2を挿入する。集束性ロッドレンズ1と光ファイバ2
が接触するように双方を押し込むと、空気孔7は集束性
ロッドレンズ1と光ファイバ2と交わるように開いてい
るので、空気孔7から余分な接着剤8が流れ出る。After pouring a small amount of adhesive into the hole slightly larger than 2 mm in diameter of the lens fixing member 3 made of ceramic,
A focusing rod lens 1 of 0.25 mm and 0.25 pitch is inserted. Then, from the opposite side of the lens fixing member 3,
An optical fiber 2 having a core diameter of 80 μm and an outer diameter of 125 μm is inserted into the μm hole. Focusing rod lens 1 and optical fiber 2
When both are pushed in so that they come into contact, the air hole 7 opens so as to intersect the focusing rod lens 1 and the optical fiber 2, so excess adhesive 8 flows out from the air hole 7.
接着剤8を硬化した後は集束性ロッドレンズ1と光ファ
イバ2が密着した状態で共にレンズ固定部材3の固定さ
れる。その後光ファイバ2の端面を鏡面研磨する。After the adhesive 8 is cured, the focusing rod lens 1 and the optical fiber 2 are fixed to the lens fixing member 3 in close contact with each other. Thereafter, the end face of the optical fiber 2 is mirror polished.
割りスリーブ5の片端には円筒の内側に折れ曲がった引
っ掛かり部6を設け、一方、レンズ固定部材3には円筒
壁面の一部がリング状に窪んだ割りスリーブ止め4を設
けており、この割りスリーブ止め4に引っ掛かり部6を
引っ掛けると、光コネクタのフェルール(図示せず)を
抜き差しする場合、割りスリーブ5がレンズ固定部材3
から離れることがない。したがって、集束性ロッドレン
ズ1を他の光学部品に接着して光結合部品を構成した場
合、光コネクタを直接接続できるので、光結合部品とし
ての構成部品の削減をすることになる。One end of the split sleeve 5 is provided with a hook part 6 that is bent inside the cylinder, while the lens fixing member 3 is provided with a split sleeve stopper 4 in which a part of the cylindrical wall surface is recessed in a ring shape. When the hook part 6 is hooked on the stopper 4, the split sleeve 5 will be attached to the lens fixing member 3 when inserting or removing the ferrule (not shown) of the optical connector.
I will never leave. Therefore, when an optical coupling component is constructed by bonding the focusing rod lens 1 to another optical component, an optical connector can be directly connected, thereby reducing the number of components for the optical coupling component.
なお、レンズ固定部材3はセラミックでできているとし
たが、レンズ固定部材3は金属で構成しても良い。Although the lens fixing member 3 is made of ceramic, the lens fixing member 3 may be made of metal.
第2図は本発明の第2の実施例の光結合部品の構成を示
した図である。第2図において、1はロッドレンズ、2
は光ファイバ、3はレンズ固定部材、4は割りスリーブ
止め、5は割りスリーブ、6は割りスリーブの引っ掛か
り部、7は空気孔、8は接着剤、9は偏光ビームスプリ
ッタ、10は偏光膜、11は1/4波長板、12は電気
光学結晶、13は電極、14は偏光ビームスプリッタ、
15は偏光膜、16は光ファイバ、17はジャケット、
18はフェルール、19は光コネクタ、20〜27は光
である。FIG. 2 is a diagram showing the configuration of an optical coupling component according to a second embodiment of the present invention. In Fig. 2, 1 is a rod lens, 2
is an optical fiber, 3 is a lens fixing member, 4 is a split sleeve stopper, 5 is a split sleeve, 6 is a hook part of the split sleeve, 7 is an air hole, 8 is an adhesive, 9 is a polarizing beam splitter, 10 is a polarizing film, 11 is a quarter wavelength plate, 12 is an electro-optic crystal, 13 is an electrode, 14 is a polarizing beam splitter,
15 is a polarizing film, 16 is an optical fiber, 17 is a jacket,
18 is a ferrule, 19 is an optical connector, and 20 to 27 are lights.
光結合部品である光電圧センサの動作について説明する
前に、その主要構成部品である1/4波長板と電気光学
結晶の機能について説明する。Before explaining the operation of the optical voltage sensor, which is an optical coupling component, the functions of the quarter-wave plate and electro-optic crystal, which are its main components, will be explained.
第3図(a)はl/4波長板の機能を説明した図で、第
3図(a)において31は直線偏光の入力光、32は1
/4波長板1.33はl/4波長板の結晶軸の方向、3
4は円偏光の出力光を示す。FIG. 3(a) is a diagram explaining the function of the 1/4 wavelength plate. In FIG. 3(a), 31 is linearly polarized input light, 32 is 1
/4 wave plate 1.33 is the direction of the crystal axis of the l/4 wave plate, 3
4 indicates circularly polarized output light.
水晶でできた厚み29μmの174波長板32の結晶軸
の方向33は直線偏光の入射光31に対して45度傾い
て設ける。直線偏光の入射光31を174波長板32に
入射すると、174波長板32の2つの結晶軸33の方
向の各偏光成分はπ/2の位相差を持つので、出力光3
4は円偏光に変換される。したがって、174波長板3
2の結晶軸33に対して45度の角度で直線偏光入射3
1すると、出力光34は円偏光になる。The direction 33 of the crystal axis of the 174-wavelength plate 32 made of quartz and having a thickness of 29 μm is inclined at 45 degrees with respect to the linearly polarized incident light 31 . When linearly polarized incident light 31 enters the 174-wave plate 32, each polarized component in the direction of the two crystal axes 33 of the 174-wave plate 32 has a phase difference of π/2, so the output light 3
4 is converted into circularly polarized light. Therefore, 174 wavelength plate 3
Linearly polarized light incident 3 at an angle of 45 degrees to the crystal axis 33 of 2
1, the output light 34 becomes circularly polarized.
第3図(b)は電気光学結晶の機能について説明した図
で、第3図(b)において35は電気光学結晶、36は
電極、37は円偏光の入射光、38は楕円偏光の出力光
、39は電気光学結晶の結晶軸、40は電気光学結晶の
電極に電圧を加えた時の屈折率楕円体の軸を示す。FIG. 3(b) is a diagram explaining the function of the electro-optic crystal. In FIG. 3(b), 35 is the electro-optic crystal, 36 is the electrode, 37 is the incident light of circularly polarized light, and 38 is the output light of elliptically polarized light. , 39 is the crystal axis of the electro-optic crystal, and 40 is the axis of the refractive index ellipsoid when a voltage is applied to the electrodes of the electro-optic crystal.
ニオブ酸リチウム結晶35のX軸方向に電圧が加わるよ
うに電極36を設は電圧を加える。電圧を加えると結晶
35の光軸39と一致していた屈折率楕円体の軸はZ軸
を中心に45度回転して座標軸40のようになる。円偏
光の入射光37をニオブ酸リチウム結晶35のZ軸方向
に入射する。An electrode 36 is provided so that a voltage is applied to the lithium niobate crystal 35 in the X-axis direction. When a voltage is applied, the axis of the refractive index ellipsoid, which was coincident with the optical axis 39 of the crystal 35, is rotated by 45 degrees around the Z axis to become a coordinate axis 40. Circularly polarized incident light 37 is incident on the lithium niobate crystal 35 in the Z-axis direction.
ニオブ酸リチウム結晶35を通過した光は位相変調を受
け、楕円偏光の光38となって出力する。The light that has passed through the lithium niobate crystal 35 undergoes phase modulation and is output as elliptically polarized light 38.
したがって、円偏光の入射光37をニオブ酸リチウム結
晶35のX軸方向に電圧を加え、Z軸方向に光を透過す
ると楕円偏光として出力され、電極36に加える電圧の
大きさに比例して出力光38の楕円の状態が変わる。Therefore, when a voltage is applied to the circularly polarized incident light 37 in the X-axis direction of the lithium niobate crystal 35 and the light is transmitted in the Z-axis direction, it is output as elliptically polarized light, and the output is proportional to the magnitude of the voltage applied to the electrode 36. The state of the ellipse of the light 38 changes.
以下第2図を参照しながら本発明の第2の実施例につい
て説明する。A second embodiment of the present invention will be described below with reference to FIG.
接続用の光コネクタ1つはコア径80μm、外径125
μmのジャケット17付き光ファイバ16に外径2 m
mのセラミックフェルール18を取付け、先端を鏡面研
磨して構成する。One optical connector for connection has a core diameter of 80 μm and an outer diameter of 125 μm.
An optical fiber 16 with a jacket 17 of μm has an outer diameter of 2 m.
It is constructed by attaching a ceramic ferrule 18 of size m and mirror-polishing the tip.
コア径80μm、外径125μm光フアイバ2と集束性
ロッドレンズ1は接着剤と共にセラミック製のレンズ固
定部材3に挿入して余分な接着剤8を空気孔7からレン
ズ固定部材3の外に出す。An optical fiber 2 with a core diameter of 80 μm and an outer diameter of 125 μm and a focusing rod lens 1 are inserted into a ceramic lens fixing member 3 together with an adhesive, and excess adhesive 8 is discharged from the lens fixing member 3 through an air hole 7.
その後、接着剤8を硬化し、集束性ロッドレンズ1と光
ファイバ2を密着すると共にレンズ固定部材3に固定す
る。光ファイバ2を先端を鏡面研磨し、割りスリーブ5
をレンズ固定部材3にかぶせ、割りスリーブ5の引っ掛
かり部6をレンズ固定部材3の割りスリーブ止め4の窪
みに入れ、光コリメータを構成する。光コネクタ19は
割りスリーブ5に挿入すると、光ファイバ2と光ファイ
バ16の光軸が一致するように保持、固定される。Thereafter, the adhesive 8 is cured, and the focusing rod lens 1 and the optical fiber 2 are brought into close contact with each other and fixed to the lens fixing member 3. The tip of the optical fiber 2 is polished to a mirror finish, and a split sleeve 5 is attached.
is placed over the lens fixing member 3, and the hook portion 6 of the split sleeve 5 is inserted into the recess of the split sleeve stopper 4 of the lens fixing member 3, thereby forming an optical collimator. When the optical connector 19 is inserted into the split sleeve 5, it is held and fixed so that the optical axes of the optical fibers 2 and 16 are aligned.
光ファイバ16aに入射した光20は光ファイバ2aか
ら出力された後、光コリメータの集束性ロッドレンズ1
aで平行光線21に変換される。The light 20 incident on the optical fiber 16a is output from the optical fiber 2a and then passes through the focusing rod lens 1 of the optical collimator.
It is converted into parallel rays 21 at point a.
平行光線21は光コリメータの集束性ロッドレンズ1a
に接着された偏光ビームスプリッタ9の偏光膜10で直
線偏光の平行光線22になる。直線偏光の平行光線22
が偏光ビームスプリッタ9に接着したl/4波長板11
を透過すると円偏光の平行光線23に変換される。17
4波長板11に接着したニオブ酸リチウム結晶12のX
軸方向に電界が加わるように電極13を設けている。電
極13に電圧V (v)が加えられるとニオブ酸リチウ
ム12が持つ電気光学効果により屈折率が変化するので
、ニオブ酸リチウム結晶12を透過した円偏光の平行光
線23ば楕円偏光の平行光線24に変換される。楕円偏
光の平行光線24はニオブ酸リチウム結晶12に接着し
た偏光ビームスプリッタ14の偏光膜15て特定の偏光
面だけが選択的に反射され直線偏光の平行光線25とな
る。直線偏光の平行光線25は偏光ビームスプリッタ1
4に接着した集束性ロッドレンズ1bで集光され、集光
された光26はファイバ1bに結合する。割りスリーブ
5bで結合、保持された光コネクタの光ファイバ16b
は光ファイバ2bと接続されているので集束性ロッドレ
ンズ1bで集光され光26は光ファイバ16bから光2
7として出力される。The parallel light beam 21 is a converging rod lens 1a of an optical collimator.
The polarizing film 10 of the polarizing beam splitter 9 attached to the polarizing film 10 converts the light into linearly polarized parallel light 22. Parallel rays of linearly polarized light 22
l/4 wavelength plate 11 glued to polarizing beam splitter 9
When transmitted, it is converted into parallel light rays 23 of circularly polarized light. 17
X of lithium niobate crystal 12 adhered to 4-wavelength plate 11
Electrodes 13 are provided so that an electric field is applied in the axial direction. When a voltage V (v) is applied to the electrode 13, the refractive index changes due to the electro-optic effect of the lithium niobate crystal 12, so that parallel rays of circularly polarized light 23 and parallel rays of elliptically polarized light 24 transmitted through the lithium niobate crystal 12 is converted to The elliptically polarized parallel light beam 24 is selectively reflected in a specific plane of polarization by the polarizing film 15 of the polarizing beam splitter 14 bonded to the lithium niobate crystal 12, and becomes a linearly polarized parallel light beam 25. Parallel light rays 25 of linearly polarized light are transmitted through polarizing beam splitter 1
The light 26 is focused by the focusing rod lens 1b bonded to the fiber 1b, and the focused light 26 is coupled to the fiber 1b. Optical fibers 16b of the optical connector connected and held by the split sleeve 5b
Since it is connected to the optical fiber 2b, the light 26 is focused by the focusing rod lens 1b and the light 26 is transmitted from the optical fiber 16b.
It is output as 7.
したがって、光ファイバ16bから出力した光27の光
強度はニオブ酸リチウム結晶12の電極13に加えられ
た電圧に比例して変化するので、電圧センサ七して動作
する。Therefore, the light intensity of the light 27 output from the optical fiber 16b changes in proportion to the voltage applied to the electrode 13 of the lithium niobate crystal 12, so that it operates as a voltage sensor.
なお、光結合部品は光電圧センサとしたが、光結合部品
は接続型光コリメータを用いたものならばいかなる機能
を持ったものでも良い。また、光ファイバ2はコア径8
0μm、外径125μmとしたが、光ファイバ2のコア
径、外径に特に制限はないことは言うまでもない。Although the optical coupling component is an optical voltage sensor, the optical coupling component may have any function as long as it uses a connected optical collimator. In addition, the optical fiber 2 has a core diameter of 8
Although the core diameter and the outer diameter of the optical fiber 2 are set to 0 μm and 125 μm, it goes without saying that there are no particular limitations on the core diameter and outer diameter.
偏光ビームスプリッタ9の偏光膜10および偏光ビーム
スプリッタ14の偏光膜15は特定の偏光面だけを選択
的に反射としたが、偏光ビームスプリッタ9の偏光膜1
0および偏光ビームスプリッタ14の偏光膜15は特定
の偏光面だけを選択的に透過するものであっても良いこ
とは言うまでもない。Although the polarizing film 10 of the polarizing beam splitter 9 and the polarizing film 15 of the polarizing beam splitter 14 selectively reflect only a specific plane of polarization, the polarizing film 1 of the polarizing beam splitter 9
It goes without saying that the polarizing film 15 of the 0 and polarizing beam splitter 14 may selectively transmit only a specific plane of polarization.
発明の効果
以上のように本発明によれば、少なくとも1個のレンズ
と、前記レンズと中心軸を一致して整列した1本の光フ
ァイバと、前記レンズおよび前記光ファイバを挿入、固
定する孔を持つ固定部材と、前記固定部材と光コネクタ
を挿入して突き合わせ接続する割りスリーブから光コリ
メータを構成することにより、部品数を削減して光コネ
クタ接続型光コリメータを安価にすることができる。Effects of the Invention As described above, according to the present invention, at least one lens, one optical fiber aligned with the central axis coinciding with the lens, and a hole into which the lens and the optical fiber are inserted and fixed. By configuring an optical collimator from a fixing member having a holder having a fixed member and a split sleeve into which an optical connector is inserted and butt-connected, the number of parts can be reduced and the cost of the optical connector-connected optical collimator can be reduced.
また、光結合部品に光コネクタ接続型光コリメータを用
いることにより、コンパクトでしかも使いやすい光結合
部品を構成することができると言う効果がある。さらに
、光コネクタ接続型光コリメータにはジャケット付き光
ファイバはないので、光ファイバが折れるということが
ないと言う効果がある。Further, by using an optical connector-connected optical collimator as an optical coupling component, it is possible to construct a compact and easy-to-use optical coupling component. Furthermore, since the optical connector-connected optical collimator does not have a jacketed optical fiber, it has the advantage that the optical fiber does not break.
第1図は本発明の第1の実施例による光コリメータを示
す構成図、第2図は本発明の第2の実施例による光電圧
センサ構成および動作を示した図、第3図はl/4波長
板とニオブ酸リチウム結晶に電圧を加えた時の偏光面の
変化を示した図、第4図は従来の光コリメータの構成を
示した図である。
1・・・・・・集束性ロッドレンズ、2・・・・・・光
ファイバ、3・・・・・・レンズ固定部材、4・・・・
・・割りスリーブ止め、5・・・・・・割りスリーブ、
6・・・・・・割りスリーブの引っ掛かり部、7・・・
・・・空気孔、8・・・・・・接着剤、9・・・・・・
偏光ビームスプリッタ、10・・・・・・偏光膜、11
・・・・・・l/4波長板、12・・・・・・ニオブ酸
リチウム結晶、13・・・・・・電極、14・・・・・
・偏光ビームスプリッタ、15・・・・・・偏光膜、1
6・・・・・・光ファイノく、17・・・・・・ジャケ
ット、18・・・・・・フェルール、19・・・・・・
光コネクタ、20〜27・・・・・・光。
代理人の氏名 弁理士 粟野重孝 ほか1名\CXJc
r)+Lqリトり
区FIG. 1 is a block diagram showing the optical collimator according to the first embodiment of the present invention, FIG. 2 is a diagram showing the configuration and operation of the optical voltage sensor according to the second embodiment of the present invention, and FIG. FIG. 4 is a diagram showing the change in the plane of polarization when a voltage is applied to a four-wave plate and a lithium niobate crystal, and FIG. 4 is a diagram showing the configuration of a conventional optical collimator. 1... Focusing rod lens, 2... Optical fiber, 3... Lens fixing member, 4...
... Split sleeve stop, 5... Split sleeve,
6...Catch part of split sleeve, 7...
...Air hole, 8...Adhesive, 9...
Polarizing beam splitter, 10...Polarizing film, 11
....l/4 wave plate, 12 .... lithium niobate crystal, 13 .... electrode, 14 ....
・Polarizing beam splitter, 15...Polarizing film, 1
6... Optical fiber, 17... Jacket, 18... Ferrule, 19...
Optical connector, 20-27... light. Name of agent: Patent attorney Shigetaka Awano and one other person\CXJc
r)+Lq litori ward
Claims (3)
た1本の光ファイバと、前記レンズおよび前記光ファイ
バを挿入、固定する孔を持つ固定部材と、前記固定部材
の光ファイバに光コネクタを挿入して突き合わせ接続す
る割りスリーブからなることを特徴とする光コリメータ
。(1) A lens, a single optical fiber aligned with the central axis of the lens, a fixing member having a hole for inserting and fixing the lens and the optical fiber, and an optical fiber in the fixing member. An optical collimator comprising a split sleeve into which a connector is inserted and butt-connected.
を反射および直線偏光に変換する第1の偏光ビームスプ
リッタと、前記直線偏光に変換された光ビームを円偏光
に変換する1/4波長板と、円偏光に変換された光ビー
ムを加えた電圧によって楕円偏光に変換するニオブ酸リ
チウム結晶と、楕円偏光に変換された光ビームを直線偏
光に変換および反射する第2の偏光ビームスプリッタと
、前記第2の偏光ビームスプリッタで直線偏光に変換さ
れた光ビームを光ファイバに結合する第2の光コリメー
タを備えたことを特徴とする光結合部品。(2) a first polarizing beam splitter that reflects the parallel light beam output from the first optical collimator and converts it into linearly polarized light; and a quarter wavelength that converts the linearly polarized light beam into circularly polarized light. a plate, a lithium niobate crystal that converts the circularly polarized light beam into elliptically polarized light by an applied voltage, and a second polarizing beam splitter that converts and reflects the elliptically polarized light beam into linearly polarized light. An optical coupling component comprising: a second optical collimator that couples the optical beam converted into linearly polarized light by the second polarizing beam splitter to an optical fiber.
メータから出力した光が透過することを特徴とする特許
請求の範囲第2項記載の光結合部品。(3) The optical coupling component according to claim 2, wherein the light output from the optical collimator passes through the first and second polarizing beam splitters.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10265589A JPH02281211A (en) | 1989-04-21 | 1989-04-21 | Optical collimator and optical coupling parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10265589A JPH02281211A (en) | 1989-04-21 | 1989-04-21 | Optical collimator and optical coupling parts |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02281211A true JPH02281211A (en) | 1990-11-16 |
Family
ID=14333254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10265589A Pending JPH02281211A (en) | 1989-04-21 | 1989-04-21 | Optical collimator and optical coupling parts |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02281211A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100465671B1 (en) * | 2002-01-21 | 2005-01-13 | 주식회사 포엠 | Collimator with integrally formed coupling |
WO2013062004A1 (en) * | 2011-10-25 | 2013-05-02 | 株式会社エンプラス | Lens array and manufacturing method thereof |
-
1989
- 1989-04-21 JP JP10265589A patent/JPH02281211A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100465671B1 (en) * | 2002-01-21 | 2005-01-13 | 주식회사 포엠 | Collimator with integrally formed coupling |
WO2013062004A1 (en) * | 2011-10-25 | 2013-05-02 | 株式会社エンプラス | Lens array and manufacturing method thereof |
JP2013092605A (en) * | 2011-10-25 | 2013-05-16 | Enplas Corp | Lens array and manufacturing method of the same |
US9110256B2 (en) | 2011-10-25 | 2015-08-18 | Enplas Corporation | Lens array and manufacturing method thereof |
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