Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2007-03-06
2007-03-06
Payne, David C. (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S182000, C398S212000, C398S202000
Reexamination Certificate
active
10121947
ABSTRACT:
High bandwidth angle modulated communications may be obtained using an incoherent/broadband “white light” source. The light is passed through interferometer arms before and after a communication link. The light is modulated in a transmitter signal optical angle modulator and in a reference optical angle modulator. By locating an interferometer and light source at a receiver, the light passes through the interferometer both before and after the optical link to the transmitter. A balanced detector implements subtraction of non-interfering light.
REFERENCES:
patent: 5615037 (1997-03-01), Betts et al.
patent: 5642194 (1997-06-01), Erskine
Hamilton Brook Smith & Reynolds P.C.
Massaschusetts Institute of Technology
Payne David C.
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