Adiabatic frequency modulated transmitter with negative chirp

Details Adiabatic frequency modulated transmitter with negative chirp Adiabatic frequency modulated transmitter with negative chirp

2005-01-21

2008-10-07

Chan, Jason (Department: 2613)

Optical communications

Transmitter

Including compensation

C398S185000, C398S199000

Reexamination Certificate

active

07433605

ABSTRACT:
The invention, in one form, is a fiber optic system having an optical signal source adapted to produce a frequency and amplitude modulated optical digital signal and a semiconductor optical amplifier adapted to receive the frequency and amplitude modulated optical digital signal and generate negative transient chirp at the transitions between bits. In another form, the invention is a fiber optic system having an optical source adapted to generate a frequency modulated signal, a semiconductor optical amplifier adapted to receive and amplify the frequency modulated signal, and an optical spectrum reshaper adapted to receive the amplified frequency modulated signal and to utilize the amplified frequency modulated signal to increase the amplitude modulation of the signal.

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Chang-Hee Lee et al., Transmission of Directly Modulated 2.5-Gb/s Signals Over 250-kn of Nondispersion-Shifted Fiber by Using a Spectral Filtering Method, IEEE Photonics Technology Letters, Dec. 1996, 1725-1727, vol. 8, No. 12.
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