Feedback mechanisms for stabilizing a laser system

Details Feedback mechanisms for stabilizing a laser system Feedback mechanisms for stabilizing a laser system

2005-08-16

2005-08-16

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular beam control device

C372S006000, C372S069000, C372S102000

Reexamination Certificate

active

06931034

ABSTRACT:
An optical system has a transmission filter device, a feedback mechanism, and one or more radiation sources. Each radiation source generates an output signal with a predetermined wavelength band and polarization and is coupled to a separate input port of the transmission filter device. The transmission filter device, which is responsive to output signal from each radiation source, generates an output signal from at least one output port thereof. The feedback mechanism is coupled to at least one output port of the transmission filter device for providing a feedback signal that is directed back through the transmission filter device to each of the radiation sources for stabilizing each of the radiation sources. The apparatus is polarization maintaining wherein the one or more radiation sources, the transmission filter device, and the feedback mechanism are interconnected such that principle axes of polarization thereof are substantially aligned.

REFERENCES:
patent: 5351262 (1994-09-01), Poguntke et al.
patent: 6052394 (2000-04-01), Lee et al.
patent: 6212310 (2001-04-01), Waarts et al.
patent: 6282214 (2001-08-01), Goto et al.
patent: 6359913 (2002-03-01), Lodenkamper
C. N. Man et al., “Injection locking of argon-ion lasers”, Optics Letters, vol. 9, No. 8, Aug. 1984, pp. 333-334.
Charles H. Henry et al., “Instability of Semiconductor Lasers Due to Optical Feedback from Distant Reflectors”, IEEE Journal Of Quantum Electronics, vol. QE-22, No. 2, Feb. 1986, pp. 131-138.
Rogerio T. Ramos et al., “Optical injection locking and phase-lock loop combined systems”, Optics Letters, vol. 19, No. 1, Jan. 1, 1994, pp. 4-6.
H. Takahashist et al., “Transmission Characteristics of Arrayed Waveguide NxN Waveguide Multiplexer”, Journal of Lightwave Technology, vol. 13, No. 3, Mar. 1995, pp. 446-455, cited at pp. 34 and 68 of the specification.
M. Zirngibl et al., “An 18-Channel Multifrequency Laser”, IEEE Photonics Technology Letters, vol. 8, No. 7, Jul. 1996, pp. 870-872.
Y. Emori et al., “Broadband lossless DCF using Raman amplification pumped by multichannel WDM laser diodes”, Electronic Letters, vol. 34, No. 22, Oct. 29, 1998, pp. 2145-2146.
Y. Emori et al., “100nm bandwidth flat-gain Raman amplifiers pumped and gain-equalized by 12-wavelength-channel WDM laser diode unit”, Electronic Letters, vol. 35, No. 16, Aug. 5, 1999, pp. 1355-1356.
Victor Grubsky et al., “Wavelength-selective coupler and add-drop multiplexer using long-period fiber gratings”, OFC 2000, vol. 4, Mar. 10, 2000, pp. 28-30.
Martin Achtenhagen et al., “L-I Charateristics of Fiber Bragg Grating Stabilized 980-nm Pump Lasers”, IEEE Photonics Technology Letters, vol. 13, No. 5, May 2001, pp. 415-417.
Beth A. Koelbl et al., Eye Safety Concerns For Ultra Long Haul Networks, National Fiber Optic Engineers Conference, 2001 Technical Proceedings, pp. 856-867.

Affiliated with

Also associated with

Rating

Feedback mechanisms for stabilizing a laser system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feedback mechanisms for stabilizing a laser system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feedback mechanisms for stabilizing a laser system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3444563