Variable wavelength optical transmitter output control...

Details Variable wavelength optical transmitter output control... Variable wavelength optical transmitter output control...

2005-07-05

2005-07-05

Ullah, Akm Enayet (Department: 2874)

Optical waveguides

With optical coupler

Plural

C398S100000, C398S115000

Reexamination Certificate

active

06915035

ABSTRACT:
The light beam emitted from a variable wavelength light source element2is partly directly monitored in a second detector2for automatic power control in an APC circuit14, and is also partly passed through a wavelength filter5with the transmittance thereof varying with the wavelength and monitored in A first detector65. Automatic frequency control is performed in an AFC circuit15while detecting wavelength variations by using the filter output and the direct monitored output. Thus, the construction is extremely simplified, while reducing the size and cost.

REFERENCES:
patent: 5202782 (1993-04-01), Nakamura et al.
patent: 5212577 (1993-05-01), Nakamura et al.
patent: 5369516 (1994-11-01), Uchida
patent: 5546483 (1996-08-01), Inoue et al.
patent: 5657144 (1997-08-01), Tanaka et al.
patent: 5663818 (1997-09-01), Yamamoto et al.
patent: 5715075 (1998-02-01), Tanaka et al.
patent: 5859718 (1999-01-01), Yamamoto et al.
patent: 5862165 (1999-01-01), Handa et al.
patent: 6023359 (2000-02-01), Asahi
patent: 6081632 (2000-06-01), Yoshimura et al.
patent: 6094446 (2000-07-01), Tei et al.
patent: 6160931 (2000-12-01), Asakura
patent: 2002/0071458 (2002-06-01), Iwafuji
patent: 1 063 794 (2000-06-01), None
patent: 1 069 658 (2000-07-01), None
patent: 63-45877 (1988-02-01), None
patent: 63-157488 (1988-06-01), None
patent: 63-158927 (1988-07-01), None
patent: 6-196785 (1994-07-01), None
patent: 8-18145 (1996-01-01), None
patent: 9-219554 (1997-08-01), None
patent: 9-298511 (1997-11-01), None
patent: 10-79551 (1998-03-01), None
patent: 10-209546 (1998-08-01), None
patent: 2000-12952 (2000-01-01), None
patent: 2001-7438 (2001-01-01), None
European Search Report dated Jul. 14, 2003.

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