JPS55103519A - 4-terminal light circulator - Google Patents
4-terminal light circulatorInfo
- Publication number
- JPS55103519A JPS55103519A JP1084279A JP1084279A JPS55103519A JP S55103519 A JPS55103519 A JP S55103519A JP 1084279 A JP1084279 A JP 1084279A JP 1084279 A JP1084279 A JP 1084279A JP S55103519 A JPS55103519 A JP S55103519A
- Authority
- JP
- Japan
- Prior art keywords
- light
- terminal
- double
- polarization
- prism
- 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 obtain the novel optical path switching element which switches the optical paths of the 4-terminal light circulator by interposing optically anisotropic crystal between a pair of double-refractive prisms and letting two orthogoal polarizing components be selectively transmitted.
CONSTITUTION: When random-polarized light in entered from terminals IN-2, IN-4, light 40 is made to light 42 of P polarization of 45° in a double-refractive prism 32 and enters magneto-optic crystal 33, by which it is rotated 45° and light 43 is produced. The light 43 aligns to the S polarization plane in a double-refractive prism 31 and therefore the P polarization component of the light 43 is fetched as light 45 of output in terminal IN-3. Similarly, the light 41 entered from terminal IN-4 becomes S-polarized light with light 42 and when it further rotates 45° and enters the prism 31, it is in alignment to the P polarization plane and therefore it is fetched out as light 44 in terminal IN-1. In this way, the optical paths may be changed to 2-3, 3-4, 4-1, 1-2 between the terminals.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1084279A JPS55103519A (en) | 1979-02-01 | 1979-02-01 | 4-terminal light circulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1084279A JPS55103519A (en) | 1979-02-01 | 1979-02-01 | 4-terminal light circulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55103519A true JPS55103519A (en) | 1980-08-07 |
Family
ID=11761596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1084279A Pending JPS55103519A (en) | 1979-02-01 | 1979-02-01 | 4-terminal light circulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55103519A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5936768A (en) * | 1995-09-20 | 1999-08-10 | Nec Corporation | Optical passive device for an optical fiber amplifier and the optical amplifier |
-
1979
- 1979-02-01 JP JP1084279A patent/JPS55103519A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5936768A (en) * | 1995-09-20 | 1999-08-10 | Nec Corporation | Optical passive device for an optical fiber amplifier and the optical amplifier |
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