JPS57190922A - Polarization eliminating circuit - Google Patents
Polarization eliminating circuitInfo
- Publication number
- JPS57190922A JPS57190922A JP7490981A JP7490981A JPS57190922A JP S57190922 A JPS57190922 A JP S57190922A JP 7490981 A JP7490981 A JP 7490981A JP 7490981 A JP7490981 A JP 7490981A JP S57190922 A JPS57190922 A JP S57190922A
- Authority
- JP
- Japan
- Prior art keywords
- beams
- polarized light
- optical
- abnormal
- normal
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Abstract
PURPOSE:To obtain a polarization eliminating circuit that eliminates the polarization of incident light, by making the linear polarized light incident vertically to a uniaxial crystal which is set so that the axis (z) is included in the surface vertical to the optical acis and then separating the normal beam from the abnormal beam with the equal optical power. CONSTITUTION:A beam is made incident so that the vibrating direction of linear polarized light is set to X-X', i.e., in the direction where a 45 deg. inclination is caused to the axes (y) and (z) of a uniaxial crystal block. In this case, the optical electric power is equal between the normal beams shown by solid lines and the abnormal beams shown by dotted lines, and both the normal and abnormal beams are transmitted in the same direction and at different speeds. When the difference of the optical path between both beams is larger than the interferable length, thes beams behave independently of each other. Thus the synthesization of electric fileds is not obtained, and the electric power synthesization is possible. The non-polarized light is equivalently obtained although both beams produce the orthogonal component and are turned into the oval polarized light while they are propagating in a sigle mode fiber or the polarized face is turned. The reason is the both beams receive the same degree of the effect of the above-mentioned phenomena.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7490981A JPS57190922A (en) | 1981-05-20 | 1981-05-20 | Polarization eliminating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7490981A JPS57190922A (en) | 1981-05-20 | 1981-05-20 | Polarization eliminating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57190922A true JPS57190922A (en) | 1982-11-24 |
Family
ID=13560978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7490981A Pending JPS57190922A (en) | 1981-05-20 | 1981-05-20 | Polarization eliminating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57190922A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59155806A (en) * | 1983-02-24 | 1984-09-05 | Kokusai Denshin Denwa Co Ltd <Kdd> | Non-polarization element |
JPH05313215A (en) * | 1992-05-13 | 1993-11-26 | Kokusai Denshin Denwa Co Ltd <Kdd> | Low polarizing light signal transmitter |
US6728437B2 (en) | 2000-06-16 | 2004-04-27 | Kdd Submarine Cable Systems Inc. | Pumping light generator and fiber Raman amplifier |
-
1981
- 1981-05-20 JP JP7490981A patent/JPS57190922A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59155806A (en) * | 1983-02-24 | 1984-09-05 | Kokusai Denshin Denwa Co Ltd <Kdd> | Non-polarization element |
JPH05684B2 (en) * | 1983-02-24 | 1993-01-06 | Kokusai Denshin Denwa Co Ltd | |
JPH05313215A (en) * | 1992-05-13 | 1993-11-26 | Kokusai Denshin Denwa Co Ltd <Kdd> | Low polarizing light signal transmitter |
US6728437B2 (en) | 2000-06-16 | 2004-04-27 | Kdd Submarine Cable Systems Inc. | Pumping light generator and fiber Raman amplifier |
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