发明名称 |
High extinction ratio fiber interferometer |
摘要 |
A high extinction ratio interferometer is disclosed. The interferometer includes a first and second optical fiber each having a first end and a reflective end and an optical coupler for coupling the first optical fiber and the second optical fiber between their first ends and their reflective ends. The first optical fiber provides a first optical path from the optical coupler to its reflective end and back to the optical coupler and the second optical fiber provides a second optical path from the optical coupler to its reflective end and back to the optical coupler. The second path is greater than the first path by a delay length and the first path and the second path are each less than approximately 20 cm. The interferometer finds application as a differential phase shift keyed (DPSK) demodulator, particularly useful in a satellite system employing inter-satellite communication.
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申请公布号 |
US2005058394(A1) |
申请公布日期 |
2005.03.17 |
申请号 |
US20030659882 |
申请日期 |
2003.09.11 |
申请人 |
THE BOEING COMPANY |
发明人 |
CONWAY JOSHUA A.;HOULT WILLIAM S. |
分类号 |
G02B6/28;(IPC1-7):G02B6/26;G01B9/02 |
主分类号 |
G02B6/28 |
代理机构 |
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代理人 |
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