Optical single sideband transmitter

Details Optical single sideband transmitter Optical single sideband transmitter

2005-02-01

2005-02-01

Harvey, Minsun Oh (Department: 2828)

Optical communications

Transmitter

Including specific optical elements

C359S237000, C359S239000, C372S025000

Reexamination Certificate

active

06850713

ABSTRACT:
With the normal modulation method, it is difficult to construct a Hilbert transform device because it is complicated. To solve the problem, a single sideband modulated optical pulse train is generated by driving a Mach-Zehnder optical modulator for optical pulse generation with a laser source's sine wave clock signals that have been rendered 90 degrees out of phase from each other. The generated pulse train is applied to an optical modulator, modulated with an NRZ (nonreturn-to-zero) data signal, and filtered by a narrow-band optical filter to obtain one of two sidebands.

REFERENCES:
patent: 6072615 (2000-06-01), Mamyshev
patent: 6114981 (2000-09-01), Nagata
patent: 6262828 (2001-07-01), Akiyama et al.
patent: 6278539 (2001-08-01), Ooi et al.
patent: 6407845 (2002-06-01), Nakamoto
patent: 6643046 (2003-11-01), Ibe et al.
patent: 6718142 (2004-04-01), Murai
patent: 20020114047 (2002-08-01), McBrien et al.
patent: 20040008395 (2004-01-01), McBrien et al.

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