Optical communications – Transmitter and receiver system – Including compensation
Reexamination Certificate
2008-08-06
2010-10-12
Pascal, Leslie (Department: 2613)
Optical communications
Transmitter and receiver system
Including compensation
C398S187000, C398S201000
Reexamination Certificate
active
07813648
ABSTRACT:
A transmitter includes a frequency modulated laser. An optical spectrum reshaper (OSR) is positioned to receive the frequency modulated signal and has a transmission function effective to convert the frequency modulation to amplitude modulation. An optical fiber channel has a first end positioned to receive the filtered signal and a second end proximate a receiver. A filter is positioned between the second end and the receiver and has a peak transmission frequency thereof located on a transmission edge of the OSR, such as at a peak logarithmic derivative value of the transmission function of the optical spectrum reshaper. In some embodiments a first OSR is positioned to receive the frequency modulated signal and configure to output a filtered signal wherein high frequency portions are more attenuated than low frequency portions. A second OSR at the receiver attenuates the low frequency portions substantially more than the high frequency portions.
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Mahgerefteh Daniel
Tayebati Parviz
Finisar Corporation
Pascal Leslie
Workman Nydegger
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