JPS6320119U - - Google Patents
Info
- Publication number
- JPS6320119U JPS6320119U JP11156486U JP11156486U JPS6320119U JP S6320119 U JPS6320119 U JP S6320119U JP 11156486 U JP11156486 U JP 11156486U JP 11156486 U JP11156486 U JP 11156486U JP S6320119 U JPS6320119 U JP S6320119U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- optical fiber
- light
- tabular
- circulator
- 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 claims description 19
- 239000013307 optical fiber Substances 0.000 claims description 19
- 239000013078 crystal Substances 0.000 claims description 12
- 230000010287 polarization Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 229910021532 Calcite Inorganic materials 0.000 claims 1
- 238000003776 cleavage reaction Methods 0.000 claims 1
- 230000005415 magnetization Effects 0.000 claims 1
- 230000007017 scission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000007175 bidirectional communication Effects 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
Description
第１―Ａ図は本考案の光サーキユレータの１例
を示す概略図である。第１―Ｂ図は第１―Ａ図に
示される光サーキユレータの平板状複屈折結晶の
光学軸をＸＹ面に射影した場合の図である。第１
―Ｃ図は第１―Ａ図に示される光サーキユレータ
の入射光の直線偏光の向き、中心を各構成要素間
での状態で示した図である。第２図は本考案の光
サーキユレータを使用した双方向通信を示す概略
図である。第３図は、従来の偏波依存性を有する
光サーキユレータを示す斜視図である。第４図は
、従来の偏波依存性をもたない光サーキユレータ
を示す概略図である。第５図は、従来の片方向の
み偏波依存性を有する光サーキユレータを示す概
略図である。
符号の説明、１……光サーキユレータ、２１…
…第１の平板状複屈折結晶、２２……第２の平板
状複屈折結晶、２３……第３の平板状複屈折結晶
、３，３０，７０……磁気光学効果板、４……ロ
ツドレンズ、５……平板状ガラス、６……磁石、
７……光送信装置、８……受光素子、１１……第
１の光フアイバ、１２……第２の光フアイバ、１
３……第３の光フアイバ、４０……偏光プリズム
、５１，５２……反射鏡、６１，６２……偏光ビ
ームスプリツター、８０，１１０……複屈折結晶
板、１２０……磁気光学効果板、１３０……施光
性ないし異方性結晶板、１４０……収束用レンズ
、１５１，１５２，１５３，１５５，１５６，１
５７……光フアイバ、１６１，１６５……分岐・
合成回路。
FIG. 1-A is a schematic diagram showing an example of the optical circulator of the present invention. FIG. 1-B is a diagram when the optical axis of the flat birefringent crystal of the optical circulator shown in FIG. 1-A is projected onto the XY plane. 1st
Figure 1-C is a diagram showing the direction and center of linearly polarized light incident on the optical circulator shown in Figure 1-A between each component. FIG. 2 is a schematic diagram showing bidirectional communication using the optical circulator of the present invention. FIG. 3 is a perspective view showing a conventional optical circulator having polarization dependence. FIG. 4 is a schematic diagram showing a conventional optical circulator without polarization dependence. FIG. 5 is a schematic diagram showing a conventional optical circulator having polarization dependence only in one direction. Explanation of symbols, 1... Optical circulator, 21...
...First tabular birefringent crystal, 22... Second tabular birefringent crystal, 23... Third tabular birefringent crystal, 3, 30, 70... Magneto-optic effect plate, 4... Rod lens , 5... Flat glass, 6... Magnet,
7... Optical transmitter, 8... Light receiving element, 11... First optical fiber, 12... Second optical fiber, 1
3... Third optical fiber, 40... Polarizing prism, 51, 52... Reflecting mirror, 61, 62... Polarizing beam splitter, 80, 110... Birefringent crystal plate, 120... Magneto-optic effect plate , 130... Light-exerting or anisotropic crystal plate, 140... Convergence lens, 151, 152, 153, 155, 156, 1
57...Optical fiber, 161,165...Branch/
Synthetic circuit.
Claims (1)
る光サーキユレータであつて、第１および第３の
光フアイバと第２の光フアイバとの間に、第１、
第２および第３の平板状複屈折結晶を同一光軸上
にこの順序で設け、第２および第３の平板状複屈
折結晶の各光学軸は、第１の平板状複屈折結晶の
光学軸に対し光軸の回りにそれぞれほぼ９０°お
よびほぼ４５°回転した位置にあり、また、第２
および第３の平板状複屈折結晶の間に、磁石と一
体化され、磁化によつて入射光と出射光の偏光方
向がほぼ４５°だけ異なるように長さを決めた磁
気光学効果板を挿入し、また、第２および第３の
平板状複屈折結晶の間にロツドレンズを挿入し、
これらを接着して一体化体とし、第１の光フアイ
バから入射・発散する光がロツドレンズにより第
２の光フアイバ端末に収束し、第２の光フアイバ
から入射・発散する光がロツドレンズにより第３
の光フアイバに収束するように、第１および第３
の光フアイバの端子ならびに第２の光フアイバの
端子を上記一体化体と接着一体化して接続し、第
１の光フアイバから入射する光のある偏光成分の
みが第２の光フアイバから送信光として出射し、
第２の光フアイバから入射する光は第３の光フア
イバから受信光として出射することを特徴とする
光サーキユレータ。 (2) 第１、第２および第３の平板状複屈折結晶
として、方解石の劈開面を使用した実用新案登録
請求の範囲第(1)項記載の光サーキユレータ。 (3) 一体化体が光路長調整部材を有する実用新
案登録請求の範囲第(1)項または第(2)項記載の光
サーキユレータ。[Claims for Utility Model Registration] (1) An optical circulator having first, second and third optical fibers, wherein an optical circulator is provided between the first and third optical fibers and the second optical fiber. 1,
The second and third tabular birefringent crystals are provided in this order on the same optical axis, and each optical axis of the second and third tabular birefringent crystals is the optical axis of the first tabular birefringent crystal. The second
A magneto-optic effect plate is inserted between the third plate-shaped birefringent crystal, which is integrated with a magnet and whose length is determined so that the polarization directions of the incident light and the output light differ by approximately 45 degrees due to magnetization. In addition, a rod lens is inserted between the second and third plate-shaped birefringent crystals,
These are glued together to form an integrated body, and the light that enters and diverges from the first optical fiber is converged onto the second optical fiber terminal by a rod lens, and the light that enters and diverges from the second optical fiber is converged by a rod lens into a third optical fiber.
the first and third optical fibers to converge on the optical fibers of the
The terminal of the optical fiber and the terminal of the second optical fiber are integrally bonded and connected to the integrated body, and only a certain polarized component of the light incident from the first optical fiber is transmitted from the second optical fiber as light. Emits,
An optical circulator characterized in that light incident from the second optical fiber is emitted as received light from a third optical fiber. (2) The optical circulator according to claim (1), in which the cleavage planes of calcite are used as the first, second, and third tabular birefringent crystals. (3) The optical circulator according to claim 1 or 2, wherein the integrated body includes an optical path length adjusting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11156486U JPS6320119U (en) | 1986-07-21 | 1986-07-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11156486U JPS6320119U (en) | 1986-07-21 | 1986-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6320119U true JPS6320119U (en) | 1988-02-09 |
Family
ID=30991603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11156486U Pending JPS6320119U (en) | 1986-07-21 | 1986-07-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6320119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993005429A1 (en) * | 1991-09-12 | 1993-03-18 | Fujitsu Limited | Optical device |
-
1986
- 1986-07-21 JP JP11156486U patent/JPS6320119U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993005429A1 (en) * | 1991-09-12 | 1993-03-18 | Fujitsu Limited | Optical device |
| US5402509A (en) * | 1991-09-12 | 1995-03-28 | Fujitsu Limited | Optical fiber coupling device including lenses and magnetooptics |
| EP0557532B1 (en) * | 1991-09-12 | 1997-04-16 | Fujitsu Limited | Optical device |
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