发明名称 |
Cascaded fiber optic lattice filter |
摘要 |
A fibre optic lattice filter having a transfer function wherein the poles and zeros are adjustable independently of each other. The filter comprises a cascaded configuration of recursive and non-recursive fiber optic lattice filters. In one preferred embodiment, an all-pass fiber optic filter is formed by cascading all-pole and all-zero lattice filters, and by processing the resulting filtered output signal in a subtractive detection system. This detection system produces a signal which represents the difference between two signal outputs provided by the all-zero filter section, and which is adjustable in magnitude, thereby providing an overall filtering function which is capable of handling both positive and negative valued input signals.
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申请公布号 |
US4768850(A) |
申请公布日期 |
1988.09.06 |
申请号 |
US19840622637 |
申请日期 |
1984.06.20 |
申请人 |
THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY |
发明人 |
MOSLEHI, BEHZAD M. R.;SHAW, HERBERT J. |
分类号 |
G02B6/28;H04L25/03;(IPC1-7):G02B6/26 |
主分类号 |
G02B6/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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