JPS6479722A - Optical isolator - Google Patents
Optical isolatorInfo
- Publication number
- JPS6479722A JPS6479722A JP23782387A JP23782387A JPS6479722A JP S6479722 A JPS6479722 A JP S6479722A JP 23782387 A JP23782387 A JP 23782387A JP 23782387 A JP23782387 A JP 23782387A JP S6479722 A JPS6479722 A JP S6479722A
- Authority
- JP
- Japan
- Prior art keywords
- analyzer
- light
- polarizer
- reflection mirror
- total reflection
- 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
Abstract
PURPOSE:To form an optical isolator having a high isolation ratio with a low cost and a good yield by arranging a magneto-optical element between a polarizer and an analyzer and providing a total reflection mirror of one end face of the analyzer. CONSTITUTION:Transmission and polarization directions of a polarizer 1 are made different by 45 deg., and a magneto-optical element 3 which has 45 deg. Farady rotation by a magnet 4 is arranged between the polarizer 1 and an analyzer 2, and a total reflection mirror 5 is provided on one end face of the analyzer 2. An incident light L1 is converted to a linearly polarized light by the polarizer and is rotated at 45 deg. by the optical element 3 and is transmitted through the analyzer 2 and is reflected on the total reflection mirror 5 and is converted to a transmitted light L2 by the polarizer 1 and is emitted. A return light L3 is rotated at 45 deg. by the element 3 and is made incident on the analyzer 2, and this light becomes a loss light L5 on the outside of the optical path because its polarization direction is orthogonal to the polarization direction of the light transmitted to the reflection mirror 5. Thus, the optical isolator having a high isolation ratio is formed with a low cost and a good yield.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23782387A JPS6479722A (en) | 1987-09-22 | 1987-09-22 | Optical isolator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23782387A JPS6479722A (en) | 1987-09-22 | 1987-09-22 | Optical isolator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6479722A true JPS6479722A (en) | 1989-03-24 |
Family
ID=17020929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23782387A Pending JPS6479722A (en) | 1987-09-22 | 1987-09-22 | Optical isolator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6479722A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01169423A (en) * | 1987-12-25 | 1989-07-04 | Copal Electron Co Ltd | Optical isolator |
US6407861B1 (en) * | 1999-04-06 | 2002-06-18 | Adc Telecommunications, Inc. | Adjustable optical circulator |
JP2014202957A (en) * | 2013-04-05 | 2014-10-27 | 浜松ホトニクス株式会社 | Optical module and observation device |
JP2014202958A (en) * | 2013-04-05 | 2014-10-27 | 浜松ホトニクス株式会社 | Optical module, light observation device, and light irradiation device |
JP2014202956A (en) * | 2013-04-05 | 2014-10-27 | 浜松ホトニクス株式会社 | Optical module and light irradiation device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284518A (en) * | 1987-05-15 | 1988-11-21 | Fujitsu Ltd | Optical isolator |
-
1987
- 1987-09-22 JP JP23782387A patent/JPS6479722A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63284518A (en) * | 1987-05-15 | 1988-11-21 | Fujitsu Ltd | Optical isolator |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01169423A (en) * | 1987-12-25 | 1989-07-04 | Copal Electron Co Ltd | Optical isolator |
US6407861B1 (en) * | 1999-04-06 | 2002-06-18 | Adc Telecommunications, Inc. | Adjustable optical circulator |
JP2014202957A (en) * | 2013-04-05 | 2014-10-27 | 浜松ホトニクス株式会社 | Optical module and observation device |
JP2014202958A (en) * | 2013-04-05 | 2014-10-27 | 浜松ホトニクス株式会社 | Optical module, light observation device, and light irradiation device |
JP2014202956A (en) * | 2013-04-05 | 2014-10-27 | 浜松ホトニクス株式会社 | Optical module and light irradiation device |
US9784980B2 (en) | 2013-04-05 | 2017-10-10 | Hamamatsu Photonics K.K. | Optical module and light exposure device |
US10175552B2 (en) | 2013-04-05 | 2019-01-08 | Hamamatsu Photonics K.K. | Optical module, optical observation device, and light exposure device |
US10495896B2 (en) | 2013-04-05 | 2019-12-03 | Hamamatsu Photonics K.K. | Optical module and observation device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4375910A (en) | Optical isolator | |
CA1217962A (en) | Optical circulator | |
US5033830A (en) | Polarization independent optical isolator | |
EP0352002B1 (en) | Optical nonreciprocal device | |
EP0383923B1 (en) | Polarizing isolation apparatus and optical isolator using the same | |
US5790299A (en) | Optical isolator employing a cadmium-zinc-tellurium composition | |
JPS6479722A (en) | Optical isolator | |
US4840464A (en) | Optical isolator employing a germanium-arsenic-selenium composition | |
CN208224531U (en) | A kind of optical fiber circulator of pole cramped construction | |
US6239900B1 (en) | Reflective fiber-optic isolator | |
EP0472728A1 (en) | Optical isolator | |
GB2143337A (en) | Optical isolator | |
JPS6438719A (en) | Optical isolator | |
JPS6257012B2 (en) | ||
JPS6157745B2 (en) | ||
JPS6461724A (en) | Optical isolator | |
JPS6447087A (en) | Semiconductor light source | |
JP2512597Y2 (en) | Optical connector adapter for single polarization fiber | |
JPS57155514A (en) | Optical branching and coupling circuit | |
JPS5621113A (en) | Light isolator coupler | |
JPS62196620A (en) | Laser module | |
CA1147998A (en) | Optical isolator | |
JPH06138410A (en) | Optical isolator | |
JPH0720407A (en) | Optical isolator | |
JPS56168622A (en) | Magnetooptic nonreciprocal optical element |