JPH046018U - - Google Patents
Info
- Publication number
- JPH046018U JPH046018U JP4596490U JP4596490U JPH046018U JP H046018 U JPH046018 U JP H046018U JP 4596490 U JP4596490 U JP 4596490U JP 4596490 U JP4596490 U JP 4596490U JP H046018 U JPH046018 U JP H046018U
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- magnetic field
- optical element
- generating means
- field generating
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 2
- 230000010287 polarization Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
Description
第１図は本考案の第１実施例にかかる光アイソ
レータの縦断面図、第２図は従来例の縦断面図、
第３図は第１図の−線断面図、第４図は第１
実施例の分解斜視図、第５図及び第６図は第１実
施例の動作説明図、第７図は第１実施例のアイソ
レーシヨン特性を示す図、第８図は第２実施例の
縦断面図、第９図は第２実施例の分解斜視図であ
る。
１……第１の偏光子、２……磁気光学素子、３
……磁界発生手段たる磁石、４……第２の偏光子
、７，８，１７，１８……第１及び第２の形状記
憶合金。
FIG. 1 is a vertical cross-sectional view of an optical isolator according to a first embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a conventional example,
Figure 3 is a sectional view taken along the - line in Figure 1, and Figure 4 is a cross-sectional view of Figure 1.
5 and 6 are explanatory diagrams of the operation of the first embodiment, FIG. 7 is a diagram showing the isolation characteristics of the first embodiment, and FIG. 8 is an illustration of the second embodiment. The vertical sectional view and FIG. 9 are exploded perspective views of the second embodiment. 1... First polarizer, 2... Magneto-optical element, 3
. . . Magnet serving as magnetic field generating means, 4 . . . Second polarizer, 7, 8, 17, 18 . . . First and second shape memory alloys.
Claims (1)
り発生された磁界内に配置された磁気光学素子と
、第２の偏光子とをそれぞれ通過させて出射させ
ることにより、この出射した光の一部が入射側に
戻るのを遮断するようにした光アイソレータにお
いて、 前記磁界発生手段と固定部材との間に、磁気光
学素子と固定部材との間、または、磁界発生手段
と磁気光学素子との間の少なくともいずれか１つ
の間に所定の温度で所定の形状となる処理を施し
た形状記憶合金を介在させることにより、温度変
化に対応して前記磁界発生手段と磁気光学素子と
の相対位置関係が変化するようにして、前記磁気
光学素子による偏光光の偏波面の回転角が所定の
温度範囲において所定の範囲になるようにしたこ
とを特徴とする光アイソレータ。[Claims for Utility Model Registration] Incident light is caused to pass through a first polarizer, a magneto-optical element disposed within a magnetic field generated by a magnetic field generating means, and a second polarizer, and then emitted. In this optical isolator, a portion of the emitted light is blocked from returning to the incident side, between the magnetic field generating means and the fixed member, between the magneto-optical element and the fixed member, or, By interposing a shape memory alloy processed to form a predetermined shape at a predetermined temperature between at least one of the magnetic field generating means and the magneto-optical element, the magnetic field generating means can respond to temperature changes. and a magneto-optical element so that the rotation angle of the plane of polarization of the polarized light by the magneto-optical element is within a predetermined range within a predetermined temperature range. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4596490U JPH0810807Y2 (en) | 1990-04-27 | 1990-04-27 | Optical isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4596490U JPH0810807Y2 (en) | 1990-04-27 | 1990-04-27 | Optical isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH046018U true JPH046018U (en) | 1992-01-21 |
| JPH0810807Y2 JPH0810807Y2 (en) | 1996-03-29 |
Family
ID=31560618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4596490U Expired - Lifetime JPH0810807Y2 (en) | 1990-04-27 | 1990-04-27 | Optical isolator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810807Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006178188A (en) * | 2004-12-22 | 2006-07-06 | Kyocera Corp | Optical isolator |
| JP2016024357A (en) * | 2014-07-22 | 2016-02-08 | 株式会社フジクラ | Optical isolator |
| WO2021256255A1 (en) * | 2020-06-15 | 2021-12-23 | 日本電気硝子株式会社 | Magnetic circuit, faraday rotator, and magneto-optic device |
-
1990
- 1990-04-27 JP JP4596490U patent/JPH0810807Y2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006178188A (en) * | 2004-12-22 | 2006-07-06 | Kyocera Corp | Optical isolator |
| JP2016024357A (en) * | 2014-07-22 | 2016-02-08 | 株式会社フジクラ | Optical isolator |
| WO2021256255A1 (en) * | 2020-06-15 | 2021-12-23 | 日本電気硝子株式会社 | Magnetic circuit, faraday rotator, and magneto-optic device |
| US12422702B2 (en) | 2020-06-15 | 2025-09-23 | Nippon Electric Glass Co., Ltd. | Magnetic circuit, faraday rotator, and magneto-optic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0810807Y2 (en) | 1996-03-29 |