Optical transmitter

Details Optical transmitter Optical transmitter

2003-07-01

2008-05-27

Chan, Jason (Department: 2613)

Optical communications

Multiplex

Wavelength division or frequency division

C398S197000, C398S198000, C398S188000

Reexamination Certificate

active

07379671

ABSTRACT:
An optical modulation processing section is provided which, in turn, includes a signal carrier-suppressed pulse modulating unit that performs signal carrier-suppressed pulse modulation on a light source signal to thereby create a CS-RZ signal, a phase modulating unit that performs phase modulation on a data signal based on the CS-RZ signal to thereby convert the data signal to a phase-modulated signal, and an optical filtering unit that filters out redundant frequency components included in the phase modulation signal.

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Miyamoto Y et al.: “Duobinary carrier-suppressed return-to-zero formal and its application to 100GHz-spaced 8×43 Gbit/s DWDM unrepeatered transmission over 163 km” Optical Fiber Communication Conference. (OFC). Technical Digest Postconference Edition. Anaheim, CA, Mar. 17-22, 2001, Trends in Optics and Photonics Series. Tops. vol. 54, Washington, WA : OSA, US, vol. 2, Mar. 17, 2001, pp. TuU4-1, XP010545838 ISBN: 1-55752-655-9.
Idler et al., 0.8bit/s/Hz of Information Spectral Density by Vestigial Sideband Filtering of 42.66 Gb/s NRZ, Sep. 8, 2002.
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