Optical communications – Transmitter – Having particular modulation
Reexamination Certificate
2008-05-13
2008-05-13
Chan, Jason (Department: 2613)
Optical communications
Transmitter
Having particular modulation
C398S186000, C398S161000
Reexamination Certificate
active
10116829
ABSTRACT:
An agile spread spectrum waveform generator comprises a photonic oscillator and an optical heterodyne synthesizer. The photonic oscillator comprises a multi-tone optical comb generator for generating a series of RF comb lines on an optical carrier. The optical heterodyne synthesizer includes first and second phase-locked lasers; the first laser feeding the multi-tone optical comb generator and the second laser comprising a rapidly wavelength-tunable single tone laser whose output light provides a frequency translation reference. A photodetector is provided for heterodyning the frequency translation reference with the optical output of the photonic oscillator to generate an agile spread spectrum waveform.
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Sayyah Keyvan
Yap Daniel
Chan Jason
HRL Laboratories
Ladas & Parry
Wang Quan-Zhen
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