Bragg grating structure

Details Bragg grating structure Bragg grating structure

2006-09-22

2010-11-02

Nguyen, Dung T (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S020000, C372S102000

Reexamination Certificate

active

07826508

ABSTRACT:
A Bragg grating has a local reflection strength which varies with position along the length of the grating so as to generate a non-uniform wavelength reflection spectrum, enabling compensation for a non-uniform gain profile of the gain section of a tunable laser. In another aspect, a Bragg comb grating is modulated by an envelope function which can also compensate for a non-uniform gain profile. The comb grating may be a phase change grating, with the envelope function shape being controlled by the length between phase changes and/or size of the phase changes.

REFERENCES:
patent: 4746192 (1988-05-01), Minagawa
patent: 4993032 (1991-02-01), Bradley
patent: 5091916 (1992-02-01), Cimini et al.
patent: 5315436 (1994-05-01), Lowenhar et al.
patent: 5633885 (1997-05-01), Galvanauskas et al.
patent: 5668900 (1997-09-01), Little et al.
patent: 5999546 (1999-12-01), Espindola et al.
patent: 6088376 (2000-07-01), O'Brien et al.
patent: 2004/0125831 (2004-07-01), Fischer
patent: 2004/0208445 (2004-10-01), Mears et al.
patent: 2004/0222364 (2004-11-01), Kenny et al.
patent: 2005/0053102 (2005-03-01), Reid
patent: 2005/0088744 (2005-04-01), Smith et al.
patent: 0 955558 (2001-02-01), None
Great Britain Search Report for corresponding Application No. 0519799.1 dated Nov. 29, 2005.
International Search Report for corresponding PCT Application No. PCT/GB2006/050302 mailed Mar. 16, 2007.
Form PCT/ISA/237.
Li Xia et al.; “Custom design of large chirped Bragg gratings on application of gain flattened filtering”; APOC 2003: Asia-Pacific Optical and Wireless Communications. Optical Fibers and Passive Components; Nov. 4-6, 2003; Wuhan, China; vol. 5279, No. 1, 2004, pp. 85-88; XP002411301.
M. Rochette et al.; “Gain Equalization of EDFA's with Bragg Gratings”; IEEE Photonics Technology Letters; IEEE Service Center, Piscataway, NJ; vol. 11, No. 5, May 1999, pp. 536-538; XP000830410.
Ivan A Avrutsky et al.; “Multiwavelength Diffraction and Apodization Using Binary Superimposed Gratings”; IEEE Photonics Technology Letters; IEEE Service Center, Piscataway, NJ; vol. 10, No. 6, Jun. 1998; XP011046068.

Affiliated with

Also associated with

Rating

Bragg grating structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bragg grating structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bragg grating structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4244207