JPS5957211A - Manufacture of optical fiber rotation polarized wave mode coupler - Google Patents

Manufacture of optical fiber rotation polarized wave mode coupler

Info

Publication number
JPS5957211A
JPS5957211A JP57167947A JP16794782A JPS5957211A JP S5957211 A JPS5957211 A JP S5957211A JP 57167947 A JP57167947 A JP 57167947A JP 16794782 A JP16794782 A JP 16794782A JP S5957211 A JPS5957211 A JP S5957211A
Authority
JP
Japan
Prior art keywords
optical fiber
polarization
polarized wave
maintaining optical
optical fibers
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.)
Granted
Application number
JP57167947A
Other languages
Japanese (ja)
Other versions
JPS6325643B2 (en
Inventor
Yoshimasa Fujii
義正 藤井
Yoshinobu Mihashi
三橋　慶喜
Osamu Koike
修 小池
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoya Corp
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
Hoya Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agency of Industrial Science and Technology, Hoya Corp filed Critical Agency of Industrial Science and Technology
Priority to JP57167947A priority Critical patent/JPS5957211A/en
Priority to US06/535,656 priority patent/US4603941A/en
Priority to EP83305757A priority patent/EP0104932B1/en
Priority to DE8383305757T priority patent/DE3382090D1/en
Priority to CA000437614A priority patent/CA1231568A/en
Publication of JPS5957211A publication Critical patent/JPS5957211A/en
Publication of JPS6325643B2 publication Critical patent/JPS6325643B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
    • G02B6/14—Mode converters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Integrated Circuits (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To exceute branching, etc. of a polarized wave face by twisting a polarized wave saving optical fiber around an axis in the longitudinal direction, melting a part of said fiber, and making a main axis direction of the polarized wave saving optical fiber different by an angle except n/2.n (n is an integer) radian, by making the melted part a boundary. CONSTITUTION:One polarized wave saving optial fiber 1 is installed between discharge electrode 4, 4 (an interval of the electrodes is about 2mm.), and is fixed to rotation adjusting jigs 3, 3. Subsequently, the rotation adjusting jigs 3, 3 are rotated by pi/4 radian as a whole in the opposite direction to each other, the polarized wave saving optical fiber 1 is twisted, and by repeating several times electric discharge whose current is 15mA for 0.1sec between the discharge electrodes 4, 4, the twisted part is melted, force of torsion is released, and the polarized wave saving optical fiber 1 whose main axis direction is made different by pi/4 can be manufactured by making the melted and coupled part of the polarized wave saving optical fiber a boundary.

Description

【発明の詳細な説明】 本発明は偏波保存光ファイバーの偏波を結合する光ファ
イバの結合方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical fiber coupling method for coupling polarizations of polarization maintaining optical fibers.

一般に、偏波保存光ファイバは単一の直線偏光波をその
偏波面を実質的に保持した状態で、軸方向に伝搬するこ
とができ、光フアイバ計測、及びコヒーレント光通信等
に対する応用が期待されている。In general, polarization-maintaining optical fibers are capable of propagating a single linearly polarized light wave in the axial direction while substantially maintaining its plane of polarization, and are expected to have applications in optical fiber measurements, coherent optical communications, etc. ing.

上記した偏波保存光ファイバの計測あるいはコヒーレン
ト通信等への用途の拡大を企図した場合。When planning to expand the use of the above-mentioned polarization-maintaining optical fiber to measurement or coherent communication, etc.

偏波面の分岐あるいは合成等が可能なことが望ましい。It is desirable that polarization planes can be split or combined.

このような分岐２合成を行なうためには。In order to perform such branch 2 synthesis.

偏波保存光ファイバの偏波の結合技術を開発しておく必
要がある。It is necessary to develop polarization coupling technology for polarization-maintaining optical fibers.

本発明の目的は偏波面の分岐等を行える偏波保存光ファ
イバの偏波の結合方法を提供することである。An object of the present invention is to provide a method for coupling polarized waves in a polarization-maintaining optical fiber, which can perform polarization plane splitting.

本発明の他の目的は、低挿入損失で安定かつ位相を乱す
ことのない光フアイバ回転型偏波モード結合器の製作方
法を提供することにある。Another object of the present invention is to provide a method for manufacturing an optical fiber rotating polarization mode coupler that has low insertion loss, is stable, and does not disturb the phase.

本発明の一つは、１本の偏波保存光ファイバをその長手
方向の軸の廻りに捩る工程と、該捩られだ部分の一部を
融解させる工程とからなシ、その融解された部分を境に
して偏波保存光ファイバの主軸方向が匹・ｎ（ｎは整数
）ラジアンを除く角度相異している。One aspect of the present invention includes the steps of twisting one polarization-maintaining optical fiber around its longitudinal axis, melting a part of the twisted portion, and melting the twisted portion. The principal axes of the polarization-maintaining optical fibers differ by angles other than 1.n (n is an integer) radians.

本発明のもう一つは、２本の偏波保存光ファイバをその
端面で長手方向の軸を一致させて接触させる工程と、そ
の接触させた端面を融着又は密着する工程とからなるが
、それら２本の偏波保存光ファイバの主軸方向が互いに
２　’　ｎ　（ｎは整数）ラジアンを除く角度相異して
いる。Another aspect of the present invention includes the steps of bringing two polarization-maintaining optical fibers into contact with each other by aligning their longitudinal axes at their end surfaces, and by fusing or closely bonding the contacted end surfaces. The directions of the principal axes of these two polarization-maintaining optical fibers differ from each other by angles other than 2' n (n is an integer) radians.

以下本発明を図面を参照して説明する。The present invention will be explained below with reference to the drawings.

第１図は本発明による第１の実施例を示した図である。FIG. 1 is a diagram showing a first embodiment according to the present invention.

図において、１は偏波保存光ファイバ。In the figure, 1 is a polarization maintaining optical fiber.

３は回転調整冶具、４は放電電極を示している。3 indicates a rotation adjustment jig, and 4 indicates a discharge electrode.

図に示されている偏波保存光ファイバーの外周側面の破
線は、直交する２つの主軸方向のうちの一方を表わして
いる。以下第１図を参照して本発明の第１の実施例を説
明する。The broken line on the outer peripheral side of the polarization-maintaining optical fiber shown in the figure represents one of two orthogonal principal axis directions. A first embodiment of the present invention will be described below with reference to FIG.

第１図囚を参照すると、先ず、１本の偏波保存光ファイ
バーを、放電電極４，４間（電極間隔約２節）に設置し
１回転調整治具３，３に固定する。Referring to FIG. 1, first, one polarization-maintaining optical fiber is installed between the discharge electrodes 4 (approximately 2 nodes apart) and fixed to the one-turn adjustment jig 3, 3.

次に、第１図（Ｂ）に示すように１回転調整治具３゜３
を互に反対方向に全体として１フツアン回転させること
によって、偏波保存光フ了イノ々１に捩りを与える。Next, as shown in Fig. 1(B), one rotation adjustment jig 3°3
By rotating the polarization-maintaining optical fibers 1 by a total of 1 foot in opposite directions, a twist is imparted to the polarization-maintaining optical fiber 1.

更に、第１図（Ｃ）に示すように５次の工程において、
放電電極４，４間で、電流が１．５　ｍＡの０．１秒の
放電を数回くりかえす。それにより、上記捩れ部を融解
させて捩れの力を解放し、その結果偏波保存光ファイバ
のビート長より短い長さの融解して結合した部分を境に
して偏波保存光ファイツク１の主軸方向か一相異したも
のが製作される。Furthermore, as shown in FIG. 1(C), in the fifth step,
Discharge for 0.1 seconds at a current of 1.5 mA is repeated several times between the discharge electrodes 4, 4. As a result, the twisted portion is melted to release the twisting force, and as a result, the main axis of the polarization maintaining optical fiber 1 is separated from the melted and coupled portion having a length shorter than the beat length of the polarization maintaining optical fiber. Something with a completely different direction will be produced.

第２図＋Ａ）　、　（Ｂ）　、及び（Ｃ）は本発明によ
る第２の実施例を示した図である。図において、１およ
び１′は偏波保存光ファイバ、３は回転調整治具、４は
放電電極、５は三軸位置調整装置を示している。Figures 2+A), (B), and (C) are diagrams showing a second embodiment according to the present invention. In the figure, 1 and 1' are polarization maintaining optical fibers, 3 is a rotation adjustment jig, 4 is a discharge electrode, and 5 is a triaxial position adjustment device.

第１図と同様に偏波保存光ファイ・ぐ１および１′の外
周側面に破線を用いて直交する２つの主軸方向のうちの
一方を表示しである。以下、第２図（Ａ）。As in FIG. 1, one of the two orthogonal principal axes directions is indicated by broken lines on the outer peripheral sides of the polarization maintaining optical fibers 1 and 1'. Below, Figure 2 (A).

（Ｂ）及び（Ｃ）を参照して本発明の第２の実施例を説
明する。A second embodiment of the present invention will be described with reference to (B) and (C).

第２図（Ａ）を参照すると、先ず・偏波保存光ファイバ
１および１′を、それぞれの三軸調整装置５および回転
調整治具３にセットする。Referring to FIG. 2(A), first, the polarization-maintaining optical fibers 1 and 1' are set in the triaxial adjustment device 5 and rotation adjustment jig 3, respectively.

次に、第２図（Ｂ）に示すように１回転調整治具３゜３
を用いて、偏波保存光ファイ・ぐ１および１′の主軸方
向の角度差が一フジアンの角度になるように偏波保存光
ファイ・ぐ１および１′の位置を調整する。Next, as shown in Fig. 2 (B), one rotation adjustment jig 3°3
Using this, the positions of polarization maintaining optical fibers 1 and 1' are adjusted so that the angular difference in the principal axis direction of polarization maintaining optical fibers 1 and 1' is one Fujian.

更に、第３図（Ｃ）に示すように、三軸調整装置５゜５
を用いて、偏波保存光ファイ・く１および１′のコアの
位置が合うように偏波保存光コアイノぐ１お上び１′を
移動調整し接触させる。その後放電電極４４を用いて、
放電を０．２秒間行うことにより、２本の偏波保存光フ
ァイ・、、　、　、　１１を融着させ、その結果２本の
偏波保存光ファイ・月、１′の主軸方向が互いに一フッ
アン相異したものが製作される。Furthermore, as shown in FIG. 3(C), a three-axis adjustment device 5°5
Using the , the polarization-maintaining optical fibers 1 and 1' are moved and adjusted so that the cores of the polarization-maintaining optical fibers 1 and 1' are brought into contact with each other. After that, using the discharge electrode 44,
By performing the discharge for 0.2 seconds, the two polarization-maintaining optical fibers . Different things are produced.

第１の実施例では、放電電極４を用いて主軸の回転して
いる領域を偏波保存光フ了イノ々１のビート長より小さ
くしているが、放電電極４０代りにマイクロトローチ、
集光したレーザ光、抵抗力ロ熱等を用いてもよい。第２
の実施例では、放電電極４の代りにマイクロトローチ、
集光したレーザ光。In the first embodiment, the area in which the main axis rotates is made smaller than the beat length of the polarization-maintaining optical flywheel 1 by using the discharge electrode 40, but instead of the discharge electrode 40, a microtroche,
Focused laser light, resistive heat, etc. may also be used. Second
In the embodiment, instead of the discharge electrode 4, a microtroche,
Focused laser light.

抵抗加熱を用いても良い。他方、第２の実施例では融着
を行なったが、密着しても良い。さらに。Resistance heating may also be used. On the other hand, although fusion bonding was performed in the second embodiment, it is also possible to adhere closely. moreover.

上記第１および第２の実施例では、偏波保存光ファイバ
の主軸方向の角度差を１フツアンに限定しているが、五
・ｎ（ｎは整数）ラジアンを除く角、　　度であればな
んでもよい。In the first and second embodiments above, the angle difference in the principal axis direction of the polarization maintaining optical fiber is limited to 1 ftan, but any angle or degree other than 5·n (n is an integer) radian may be used. good.

以上の説明で明らかなように１本発明によれば。According to one aspect of the present invention, as is clear from the above description.

低挿入損失で安定かつ位相を乱すことのない光フアイバ
回転型偏波モード結合器を簡単な作業で堅、　　牢に経
済的に製作することができる。従って１本発明で得られ
た光ファイ／（回転型偏波モートゝ結合器を使用するこ
とにより、光）アイ・々を用いた言十測、情報伝送の分
野において光の可干渉性を利用した計測１通信および偏
波モードを利用した多重化を行なうことができる。An optical fiber rotating polarization mode coupler that has low insertion loss, is stable, and does not disturb the phase can be fabricated easily, robustly, and economically. Therefore, by using the optical fiber/(rotating polarization mode coupler) obtained in the present invention, the coherence of light can be utilized in the field of information transmission using optical fibers. It is possible to perform measurement 1 communication and multiplexing using polarization mode.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明による第１の実施例を示した図。 第２図は本発明による第２の実施例を示した図である。 記号の説明：１．ｒは偏波保存光ファイバ、−４：蛙命
出蕎竺＝３は回転調整治具、４は放電電極。 ５は三軸位置調整装置をそれぞれあられしている。 第１図 第２図FIG. 1 is a diagram showing a first embodiment according to the present invention. FIG. 2 is a diagram showing a second embodiment according to the present invention. Explanation of symbols: 1. r is a polarization-maintaining optical fiber, -4 is a rotation adjustment jig, and 4 is a discharge electrode. 5 denotes a three-axis position adjustment device. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] １．１本の偏波保存光ファイバを該偏波保存光ファイバ
の長手方向の軸の廻りに２−ｎ　（ｎは整数）ラジアン
を除く任意の角度板る工程と、該捩られた部分を融解さ
せる工程とからなる偏波保存光ファイバの結合方法。 ２、主軸方向が互いに−・ｎ（ｎは整数）ラジアンを除
く任意の角度相異する２本の偏波保存光ファイバを該２
本の偏波保存光ファイバの端面で該２本の偏波保存光フ
ァイバの長手方向の軸が一致するように接触させる工程
と、該接触させた端面を融着又は密着する工程とからな
る偏波保存光ファイバの結合方法。 以下糸口1. Placing one polarization-maintaining optical fiber at an arbitrary angle excluding 2-n (n is an integer) radians around the longitudinal axis of the polarization-maintaining optical fiber, and removing the twisted portion. A method for coupling polarization-maintaining optical fibers, which comprises a step of melting. 2. Two polarization-maintaining optical fibers whose principal axes differ from each other at any angle other than -・n (n is an integer) radian.
A process of bringing the two polarization-maintaining optical fibers into contact with each other so that the longitudinal axes of the two polarization-maintaining optical fibers coincide with each other, and a process of fusing or tightly bonding the contacted end faces. A coupling method for wave preserving optical fibers. Below are the clues
JP57167947A 1982-09-27 1982-09-27 Manufacture of optical fiber rotation polarized wave mode coupler Granted JPS5957211A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP57167947A JPS5957211A (en) 1982-09-27 1982-09-27 Manufacture of optical fiber rotation polarized wave mode coupler
US06/535,656 US4603941A (en) 1982-09-27 1983-09-26 Polarization-maintaining fiber system and method of manufacturing the same
EP83305757A EP0104932B1 (en) 1982-09-27 1983-09-27 Polarization-maintaining fiber system and method of manufacturing the same
DE8383305757T DE3382090D1 (en) 1982-09-27 1983-09-27 FIBER SYSTEM WITH A PREFERRED POLARIZATION DIRECTION AND METHOD FOR THE PRODUCTION THEREOF.
CA000437614A CA1231568A (en) 1982-09-27 1983-09-27 Polarization-maintaining fiber system and method of manufacturing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57167947A JPS5957211A (en) 1982-09-27 1982-09-27 Manufacture of optical fiber rotation polarized wave mode coupler

Publications (2)

Publication Number Publication Date
JPS5957211A true JPS5957211A (en) 1984-04-02
JPS6325643B2 JPS6325643B2 (en) 1988-05-26

Family

ID=15858992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57167947A Granted JPS5957211A (en) 1982-09-27 1982-09-27 Manufacture of optical fiber rotation polarized wave mode coupler

Country Status (1)

Country Link
JP (1) JPS5957211A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184403A (en) * 1986-02-10 1987-08-12 Nippon Telegr & Teleph Corp <Ntt> Fusion splicing method for optical fiber
US5457756A (en) * 1992-07-10 1995-10-10 Deutsche Aerospace Ag Fiber-optic depolarizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220843A (en) * 1975-08-11 1977-02-17 Nippon Telegr & Teleph Corp <Ntt> Optical fiber melting connection device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220843A (en) * 1975-08-11 1977-02-17 Nippon Telegr & Teleph Corp <Ntt> Optical fiber melting connection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62184403A (en) * 1986-02-10 1987-08-12 Nippon Telegr & Teleph Corp <Ntt> Fusion splicing method for optical fiber
US5457756A (en) * 1992-07-10 1995-10-10 Deutsche Aerospace Ag Fiber-optic depolarizer

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Publication number Publication date
JPS6325643B2 (en) 1988-05-26

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