Optical SSB modulator

Details Optical SSB modulator Optical SSB modulator

2007-07-03

2007-07-03

Bovernick, Rodney (Department: 2874)

Optical waveguides

Temporal optical modulation within an optical waveguide

C385S039000, C385S003000, C385S040000

Reexamination Certificate

active

11085609

ABSTRACT:
An optical SSB modulator capable of appropriately adjusting a phase difference of light in the MZ waveguides and automatically adjusting a voltage impressed to the bias adjustment electrodes is provided. The above-mentioned object is achieved by an optical SSB modulator (1) provided with a first sub Mach-Zehnder waveguide (MZA) (2), a second sub Mach-Zehnder waveguide (MZB) (3), a main Mach-Zehnder waveguide (MZC) (4), a first bias adjustment electrode (DCAelectrode) (5), a second bias adjustment electrode (DCBelectrode) (6), a first modulation electrode (RFAelectrode) (7), a second modulation electrode (RFBelectrode) (8) and a third bias adjustment electrode (DCCelectrode) (9), wherein either one of or both of output portions (10, 11) of the MZAand the MZBhave an X-branching form, and specifically having one of light paths of the X-branching connected to a photodetector.

REFERENCES:
patent: 4860279 (1989-08-01), Falk et al.
patent: 5333000 (1994-07-01), Hietala et al.
patent: 6334004 (2001-12-01), Ohkuma et al.
patent: 2001/0005437 (2001-06-01), Masuda et al.
patent: 2002/0130251 (2002-09-01), Myers et al.
patent: 2003/0219188 (2003-11-01), Doi et al.

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