发明名称 |
Optical multiplexer and demultiplexer |
摘要 |
In optical multiplexers and demultiplexers which utilize interference filters and optical gratings losses and noise are reduced by converting the unpolarized light into linearly polarized light. This improves the efficiency of the filters and gratings and suppresses noise which is caused by fluctuations in the degree of polarization of unpolarized light because filters and gratings have different characteristics for the different polarization directions.
|
申请公布号 |
US4741588(A) |
申请公布日期 |
1988.05.03 |
申请号 |
US19820411927 |
申请日期 |
1982.08.26 |
申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
NICIA, ANTONIUS J. A.;VAN ROOY, THEODORUS L.;HAISMA, JAN |
分类号 |
G02B6/293;G02B6/34;G02B27/28;(IPC1-7):G02B6/34;H04B9/00 |
主分类号 |
G02B6/293 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|