JPS6161644B2 - - Google Patents
Info
- Publication number
- JPS6161644B2 JPS6161644B2 JP57129846A JP12984682A JPS6161644B2 JP S6161644 B2 JPS6161644 B2 JP S6161644B2 JP 57129846 A JP57129846 A JP 57129846A JP 12984682 A JP12984682 A JP 12984682A JP S6161644 B2 JPS6161644 B2 JP S6161644B2
- Authority
- JP
- Japan
- Prior art keywords
- polarization
- maintaining optical
- optical fiber
- core
- jacket
- 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.)
- Expired
Links
- 239000013307 optical fiber Substances 0.000 claims description 25
- 230000010287 polarization Effects 0.000 claims description 17
- 238000005253 cladding Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910005793 GeO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Description
【発明の詳細な説明】
この発明は偏波面保存光フアイバの改良に関す
る。DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in polarization maintaining optical fibers.
偏波面保存光フアイバは光伝搬モードの偏波面
を保存する光フアイバで、別々単一偏波光フアイ
バ、単偏波光フアイバとも呼ばれている。この偏
波面保存光フアイバは最近開発されたものである
が、位相変化の情報を伝達することが可能である
ことから、このフアイバを利用した各種センサの
試作も活発に行なわれ始めている。ところでこの
ような使い方がなされる場合、特殊な環境下で上
記センサを検出器との間を偏波面保存光フアイバ
で接続することもあり、この時には偏波面を一致
させるような接続が必要である。しかしながら、
従来の偏波面保存光フアイバでは、フアイバ端同
士をいつたん仮に接続したうえで偏向特性を測定
し、その測定結果にもとづきフアイバ端を回転さ
せて再び接続して測定し、これを偏波面が一致す
るまで繰返すという作業が必要であり、接続作業
はきわめて煩雑なものであつた。 A polarization-maintaining optical fiber is an optical fiber that maintains the plane of polarization of an optical propagation mode, and is also called a separate single-polarization optical fiber or a single-polarization optical fiber. This polarization-maintaining optical fiber has been developed recently, but since it is capable of transmitting phase change information, various types of sensors using this fiber are now actively being prototyped. By the way, when used in this way, the above sensor may be connected to the detector under special circumstances using a polarization-preserving optical fiber, and in this case it is necessary to connect the polarization planes in such a way that they match. . however,
With conventional polarization-maintaining optical fibers, the fiber ends are temporarily connected and the polarization characteristics are measured.Based on the measurement results, the fiber ends are rotated and reconnected and measured.This is done to ensure that the polarization planes match. The connection work was extremely complicated, as it required repeating the work until the connection was completed.
この発明は上記に鑑み、２本の偏波面保存光フ
アイバを接続する場合にそれらの偏波面を一致さ
せることがきわめて容易となるように改善した偏
波面保存光フアイバを提供することを目的とす
る。 In view of the above, an object of the present invention is to provide an improved polarization-maintaining optical fiber so that it is extremely easy to match the polarization planes of two polarization-maintaining optical fibers when connecting them. .
以下、この発明の一実施例について図面を参照
しながら説明する。第１図はこの発明をクラツド
の形が楕円になつているタイプの偏波面保存光フ
アイバに適用した一実施例の断面を示す。この図
において、コア１はたとえばGeO2−SiO2で形成
され、このコア１のまわりに、このコア１よりも
屈折率の低い楕円の形をした、たとえばB2O3−
SiO2でなる応力付与部を構成するクラツド２が
形成され、さらにこのクラツド２のまわりをたと
えば石英系ガラス（SiO2）のジヤケツト３が被覆
している。そしてこのジヤケツト３内には、ジヤ
ケツト３とは屈折率の異なる線状部材４，４が縦
添え埋設されている。この線状部材４，４はたと
えばTiO2−SiO2ガラスのような高損失で、屈折
率が周囲のジヤケツト３の材質よりも高い材質で
形成される。この線状部材４，４の埋設位置は偏
波面に対して所定の関係位置、この実施例では楕
円形のクラツド２の長径に直角でコア１を通る直
線上の位置としている。なおクラツド２を楕円形
にしたのはクラツド２の残留応力を長径方向と短
径方向で変えてコア１に与える圧力を変えること
によりコア１内の屈折率に差をもたせて伝搬速度
を方向によつて変えるためである。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a cross section of an embodiment in which the present invention is applied to a polarization maintaining optical fiber having an elliptical cladding. In this figure, a core 1 is formed of, for example, GeO 2 -SiO 2 , and around this core 1 is formed an elliptical material having a lower refractive index than that of the core 1, for example, B 2 O 3 -
A cladding 2 constituting a stress applying portion made of SiO 2 is formed, and a jacket 3 made of, for example, silica glass (SiO 2 ) covers the cladding 2. Linear members 4, 4 having a different refractive index from the jacket 3 are vertically embedded in the jacket 3. The linear members 4, 4 are made of a material with high loss and a refractive index higher than that of the surrounding jacket 3, such as TiO 2 --SiO 2 glass. The buried positions of the linear members 4, 4 are in a predetermined relation to the plane of polarization, and in this embodiment, they are located on a straight line passing through the core 1 at right angles to the major axis of the elliptical cladding 2. The reason why the clad 2 is made into an elliptical shape is that the residual stress of the clad 2 is changed in the major axis direction and the minor axis direction, and the pressure applied to the core 1 is changed, thereby creating a difference in the refractive index within the core 1, thereby changing the propagation velocity in the direction. It is for the purpose of changing it.
このような構成の偏波面保存光フアイバに横方
向から強い光を照射すると、線状部材４，４はジ
ヤケツト３とは屈折率が異なるため、この線状部
材４，４を外部から人間の目で見ることができ
る。したがつて接続時には、第２図に示すように
２本の偏波面保存光フアイバに対して横方向から
強い光をあて、線状部材４，４の位置が両者で一
致するように、一方の偏波面保存光フアイバに対
して他方の偏波面保存光フアイバを回転させる。
そしてこれらの位置が一致したときに両者を接続
すれば偏波面を一致させることができる。なお、
実際に上記構成の偏波面保存光フアイバを試作し
てみて上記のようにして接続する実験を行ない、
接続後偏光特性を測定した結果、２本の偏波面保
存光フアイバの偏波面が一致していることが確認
できた。このように、簡単な接続作業により偏波
面を一致させることができる。 When a polarization-maintaining optical fiber having such a configuration is irradiated with strong light from the side, the linear members 4, 4 have a different refractive index from the jacket 3, so the linear members 4, 4 cannot be seen from the outside by the human eye. You can see it at Therefore, when connecting, as shown in Fig. 2, strong light is applied to the two polarization-maintaining optical fibers from the lateral direction, and one is The other polarization maintaining optical fiber is rotated relative to the other polarization maintaining optical fiber.
Then, when these positions match, by connecting both, the planes of polarization can be made to match. In addition,
We actually prototyped a polarization-maintaining optical fiber with the above configuration and conducted an experiment to connect it as described above.
As a result of measuring the polarization characteristics after connection, it was confirmed that the polarization planes of the two polarization-maintaining optical fibers matched. In this way, the planes of polarization can be matched by a simple connection operation.
なお、上記の実施例は、この発明を、クラツド
が楕円形になつていてコアに与える圧力を方向に
よつて変えることによりコア内の屈折率に差をも
たせて伝搬速度を方向によつて変えるようにした
タイプの偏波面保存光フアイバに適用したもので
あるが、コアを楕円にする代りにサイドピツトを
設けるタイプの偏波面保存光フアイバなど、他の
タイプの偏波面保存光フアイバにも適用できる。 In addition, in the above embodiment, the cladding has an elliptical shape, and by changing the pressure applied to the core depending on the direction, the refractive index within the core is different, and the propagation speed is changed depending on the direction. Although this method has been applied to polarization-maintaining optical fibers of this type, it can also be applied to other types of polarization-maintaining optical fibers, such as polarization-maintaining optical fibers with side pits instead of an elliptical core. .
以上、実施例について述べたようにこの発明に
よれば、２本の偏波面保存光フアイバを接続する
場合にそれらの偏波面を一致させることがきわめ
て容易になるので接続作業の能率を大幅に向上さ
せることができる。 As described above with respect to the embodiments, according to the present invention, it is extremely easy to match the polarization planes when connecting two polarization-maintaining optical fibers, which greatly improves the efficiency of the connection work. can be done.
第１図はこの発明の一実施例に係る偏波面保存
光フアイバの断面図、第２図ａ，ｂ，ｃは接続時
の様子を示すためのもので、第２図ａは側面図、
第２図ｂ，ｃはそれぞれ第２図ａにおけるＢ−Ｂ
線断面図及びＣ−Ｃ線断面図である。
１……コア、２……クラツド、３……ジヤケツ
ト、４……線状部材。
FIG. 1 is a sectional view of a polarization maintaining optical fiber according to an embodiment of the present invention, FIGS. 2a, b, and c are for showing the state when connected, and FIG. 2a is a side view.
Figure 2 b and c are B-B in Figure 2 a, respectively.
They are a line sectional view and a CC line sectional view. 1... Core, 2... Clad, 3... Jacket, 4... Linear member.
Claims (1)
付与部と、ジヤケツトとからなる偏波面保存光フ
アイバにおいて、ジヤケツトの屈折率とは異なる
屈折率を有する線状部材を、偏波面に対して所定
の関係位置においてジヤケツト中に縦添え埋設し
たことを特徴とする偏波面保存光フアイバ。1. In a polarization-maintaining optical fiber consisting of a circular core, a stress applying part that applies stress to the core, and a jacket, a linear member having a refractive index different from that of the jacket is placed at a predetermined position with respect to the polarization plane. A polarization-maintaining optical fiber characterized in that it is vertically embedded in a jacket at a position related to the polarization-maintaining optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57129846A JPS5919902A (en) | 1982-07-26 | 1982-07-26 | Optical fiber maintaining plane of polarization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57129846A JPS5919902A (en) | 1982-07-26 | 1982-07-26 | Optical fiber maintaining plane of polarization |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61059860A Division JPS61215503A (en) | 1986-03-18 | 1986-03-18 | Polarization plane maintaining optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5919902A JPS5919902A (en) | 1984-02-01 |
| JPS6161644B2 true JPS6161644B2 (en) | 1986-12-26 |
Family
ID=15019679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57129846A Granted JPS5919902A (en) | 1982-07-26 | 1982-07-26 | Optical fiber maintaining plane of polarization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5919902A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784458A (en) * | 1985-12-16 | 1988-11-15 | Allied-Signal Inc. | Optically aligned splice for optical fibers |
| JPH01239050A (en) * | 1987-11-13 | 1989-09-25 | Kaoru Umeya | Ceramic-based product of grain pattern and production thereof |
| JP3630664B2 (en) | 2002-01-29 | 2005-03-16 | 三菱電線工業株式会社 | Polarization-maintaining photonic crystal fiber |
| JP4220261B2 (en) * | 2003-02-12 | 2009-02-04 | 三菱電線工業株式会社 | Photonic crystal fiber manufacturing method |
-
1982
- 1982-07-26 JP JP57129846A patent/JPS5919902A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5919902A (en) | 1984-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4997247A (en) | Fiber optic coupler and method for making same | |
| US7308173B2 (en) | Optical fiber coupler with low loss and high coupling coefficient and method of fabrication thereof | |
| US4784454A (en) | Optical fiber and laser interface device | |
| CN100541244C (en) | Polarization maintaining optical fibre and optical fibre gyro | |
| CN102103228B (en) | Double waveguide parallel polarization maintaining fiber and manufacturing method thereof | |
| JPH0752249B2 (en) | Directional coupler | |
| JPH0237307A (en) | Permanent optical fiber connector | |
| JPH03100603A (en) | Method of manufacturing fused optical fiber coupler | |
| EP0136761B1 (en) | Method and device for coupling an optical signal from a first light guide into a second light guide | |
| JPS6161644B2 (en) | ||
| US5488683A (en) | Method for splicing polarization maintaining fiber with elliptical stress member | |
| JPH0264508A (en) | Ferrule for fixing constant polarization optical fiber and method for fixing constant polarization optical fiber by using said ferrule | |
| JPH0579924B2 (en) | ||
| JPS5927884B2 (en) | How to connect optical fiber | |
| JPS636507A (en) | Optical fiber with constant polarized wave | |
| EP0059644A1 (en) | Optical gyroscope | |
| JPS59139005A (en) | Fiber for maintaining linearly polarized light | |
| JPS61215503A (en) | Polarization plane maintaining optical fiber | |
| JPS6139363Y2 (en) | ||
| JP2805533B2 (en) | Fiber fusion type optical branch coupler | |
| CN109813459A (en) | A kind of M-Z fibre optic interferometer temperature sensor and preparation method thereof | |
| JP2528094B2 (en) | Fiber type polarizer | |
| JPH0518722Y2 (en) | ||
| JPH01134403A (en) | Polarization maintaining optical fiber | |
| CN116907468A (en) | High-performance hollow fiber optic gyroscope ring-waveguide assembly structure easy to install and assembly method |