Method and apparatus for performing optical imaging using frequency-domain interferometry
US-2016320170-A1 · Nov 3, 2016 · US
Polarization independent optical isolator
US2018156976A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018156976-A1 |
| Application number | US-201715819978-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 21, 2017 |
| Priority date | Dec 5, 2016 |
| Publication date | Jun 7, 2018 |
| Grant date | — |
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Abstract
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The present invention is a polarization independent optical isolator including two polarizing separation members each configured to separate polarization components of a transmitted light, an absorptive polarizer arranged on optical paths of separated transmitted lights and corresponding to a plane of polarization of each separated transmitted light, and a Faraday rotator, wherein the Faraday rotator is arranged downstream of the absorptive polarizer in a forward direction. As a result, there can be provided a polarization independent optical isolator that requires no stray light processing of separated optical feedback and shows high isolation.
First claim
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1 . A polarization independent optical isolator comprising: two polarizing separation members each configured to separate polarization components of a transmitted light; an absorptive polarizer arranged on optical paths of separated transmitted lights and corresponding to a plane of polarization of each separated transmitted light; and a Faraday rotator, wherein the Faraday rotator is arranged downstream of the absorptive polarizer in a forward direction. 2 . The polarization independent optical isolator according to claim 1 , wherein a half-wave plate is arranged downstream of the absorptive polarizer in the forward direction. 3 . The polarization independent optical isolator according to claim 1 , wherein a half-wave plate is arranged upstream of the absorptive polarizer in the forward direction. 4 . The polarization independent optical isolator according to claim 1 , wherein the polarization independent optical isolator comprises two Faraday rotators, and one of the Faraday rotators is arranged upstream of the absorptive polarizer in the forward direction. 5 . The polarization independent optical isolator according to claim 1 , wherein the polarizing separation members are a polarizing prism. 6 . The polarization independent optical isolator according to claim 2 , wherein the polarizing separation members are a polarizing prism. 7 . The polarization independent optical isolator according to claim 3 , wherein the polarizing separation members are a polarizing prism. 8 . The polarization independent optical isolator according to claim 4 , wherein the polarizing separation members are a polarizing prism.
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Classifications
Polarisation independent · CPC title
comprising polarisation means for beam splitting and combining · CPC title
- G02F1/093Primary
used as non-reciprocal devices, e.g. optical isolators, circulators (G02F1/0955 takes precedence) · CPC title
- G02B6/2746Primary
comprising non-reciprocal devices, e.g. isolators, FRM, circulators, quasi-isolators (magneto-optic non-reciprocal devices G02F1/093) · CPC title
- G02F1/09Primary
based on magneto-optical elements, e.g. exhibiting Faraday effect · CPC title
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- What does patent US2018156976A1 cover?
- The present invention is a polarization independent optical isolator including two polarizing separation members each configured to separate polarization components of a transmitted light, an absorptive polarizer arranged on optical paths of separated transmitted lights and corresponding to a plane of polarization of each separated transmitted light, and a Faraday rotator, wherein the Faraday r…
- Who is the assignee on this patent?
- Shinetsu Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification G02F1/093. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Jun 07 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).