H - Electricity – 04 – B
Patent
H - Electricity
04
B
325/1, 325/38
H04B 10/00 (2006.01) H04B 14/00 (2006.01)
Patent
CA 1337438
Digital information is modulated onto an optical carrier using differential-polarization encoding, passed through a transmission medium which may produce unpredictable long-term changes in polarization and then demodulated using differential-polarization detection techniques (e.g., by comparing relative polarization between successive clock periods). Other modulated carrier parameters may be used to simultaneously carry further information. Special polarization modulation and detection techniques are also disclosed.
616751
British Telecommunications Public Limited Company
G. Ronald Bell & Associates
LandOfFree
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