Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2007-08-21
2010-10-05
Pascal, Leslie (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S183000, C398S186000, C398S188000, C398S193000, C398S199000
Reexamination Certificate
active
07809280
ABSTRACT:
An optical transmitter comprising:an optical source modulated with an input digital data signal so as to generate a first, frequency-modulated digital signal; andan amplitude modulator, modulated with the logical inverse of the input digital data signal, for receiving the first, frequency-modulated signal and generating a second, amplitude-modulated and frequency-modulated digital signal;wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.A method for transmitting a signal, the method comprising:generating a first, frequency-modulated digital signal by modulating an optical source with an input digital data signal; andproviding a second, amplitude-modulated and frequency-modulated digital signal by passing the first, frequency-modulated digital signal through an amplitude modulator while modulating the amplitude modulator with the logical inverse of the input digital data signal;wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.
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Johnson Bart
Mahgerefteh Daniel
Matsui Yasuhiro
Tayebati Parviz
Walker Duncan J W
Finisar Corporation
Pascal Leslie
Workman Nydegger
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