Optical waveguides – With optical coupler – Plural
Patent
1997-08-01
1999-12-21
Healy, Brian
Optical waveguides
With optical coupler
Plural
385 15, 385 16, 385 31, 385 33, 385 34, 385 39, 359115, 359124, 359127, 359131, G02B 628, H04J 1400
Patent
active
060059958
ABSTRACT:
In order to tune the frequencies of radiation sources, a frequency locker is provided having equally spaced periodic frequencies with a spectral range substantially equal to the frequency spacing of a plurality of radiation sources with equally spaced apart frequencies. The periodic frequencies of the locker are slightly offset from those of the radiation sources. Radiation from each of the sources is passed through the locker and the radiation passed by the locker is detected and used to adjust the frequencies of the sources in order to tune the sources. The frequency locker includes an etalon with dimensions accurate to 0.5 microns or better. The dimension of the etalon may be controlled by controlling the thickness of spacers for maintaining vacuum or air gaps where the dimensions may be altered by thin film deposition and etching techniques. The optical path length of the etalon may also be changed by altering the angle of incidence of an incoming beam with the reflective surfaces of the etalon.
REFERENCES:
patent: 4896935 (1990-01-01), Lee
patent: 5076672 (1991-12-01), Tsuda et al.
patent: 5428700 (1995-06-01), Hall
patent: 5446809 (1995-08-01), Fritz et al.
patent: 5453827 (1995-09-01), Lee
patent: 5493625 (1996-02-01), Glance
patent: 5542010 (1996-07-01), Glance et al.
patent: 5574588 (1996-11-01), Kawanishi et al.
patent: 5742416 (1998-04-01), Mizrahi
"Thermal effects in optical systems," Thomas H. Jamieson, reprinted with permission from Optical Engineering (vol. 20(2), pp. 156-160, Mar./Apr. 1981), pp. 271-275.
"The primary technical challenges deal with achieving low losses in a narrow passband region," David Polinsky, Ph.D., Lightwave, Feb. 1996, pp. 1-4.
SELFOC.RTM., product guide by NSG America (no date).
ULE.TM. Zero Expansion Glass product guide by Corning Incorporated (no date).
Chen George C. K.
Lee Ho-Shang
Polinsky David
Su Wen-Herng
Ye Feng
Dicon Fiberoptics, Inc.
Healy Brian
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