Method and apparatus for modulation of self-pulsating diode laser's self-pulsating frequency
AssigneeThe Regents of the University of California
InventorsJohn B. Georges, Kam Y. Lau
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Abstract
Disclosed is an optical communication system which uses the self-pulsating frequency of a self-pulsating laser diode as a microwave subcarrier to transmit digital information. The system has a transmitter comprising a self-pulsating laser diode and a modulating mechanism for encoding the laser's self-pulsating microwave sub-carrier. In one embodiment, the modulating mechanism employs frequency-shift keying for digitally encoding the sub-carrier. Furthermore, the optical communication system has a receiver including a photodetector and a signal decoder.
Claims13
A system for optical communications, comprising:
- a transmitter comprising a self-pulsating laser diode for generating a light signal comprising an optical carrier and a self-pulsating microwave sub-carrier;
- modulating means for modulating said self-pulsating microwave sub-carrier generated by said transmitter so as to generate a modulated microwave sub-carrier light signal;
- and
- a receiver comprising a photodetector for receiving said modulated microwave sub-carrier light signal and a decoder for decoding said modulated microwave sub-carrier light signal.
A system of optical communications, comprising:
- a transmitter comprising a SPLD for generating a light signal comprising an optical carrier and a self-pulsating microwave sub-carrier;
- modulating means for frequency-shift keying said self-pulsating microwave sub-carrier generated by said transmitter so as to generate a modulated microwave sub-carrier light signal;
- a receiver comprising a photodetector for receiving said modulated microwave sub-carrier light signal and decoding said modulated microwave sub-carrier light signal.
A method utilizing a SPLD for providing optical communications, comprising the steps of:
- transmitting a light signal comprising an optical carrier and a self-pulsating microwave sub-carrier;
- modulating said self-pulsating microwave sub-carrier of said light signal transmitted in said transmitting step so as to generate a modulated micro-wave sub-carrier light signal;
- receiving said modulated microwave sub-carrier light signal;
- and
- decoding said modulated microwave sub-carrier light signal.
A method utilizing a SPLD for providing optical communications, comprising the steps of:
- transmitting a light signal comprising an optical carrier and a self-pulsating microwave sub-carrier;
- frequency-shift keying said self-pulsating microwave sub-carrier of said light signal transmitted in said transmitting step so as to generate a modulated microwave sub-carrier light signal;
- receiving said modulated microwave sub-carrier light signal;
- and
- decoding said modulated microwave sub-carrier light signal.
Dependencies are inferred from the claim text.