Optical: systems and elements – Light interference – Electrically or mechanically variable
Patent
1996-01-24
1998-07-14
Dzierzynski, Paul M.
Optical: systems and elements
Light interference
Electrically or mechanically variable
359813, 359900, 385140, G02B 2700, G02B 600
Patent
active
057813418
ABSTRACT:
A tunable filter includes a filter whose characteristic wavelength band changes with the angle of incidence of the incoming light beam with respect to its normal direction, a motor for rotating the filter in order to change the angle of incidence, and a controller controlling the motor to rotate the filter by an amount so that the filter has a desired characteristic wavelength band. A variable attenuator for adjusting insertion loss between an input light beam and an output light beam includes a pair of input and output collimators, a cam connected to at least one of the two collimators, and a motor for rotating the cam for displacing one collimator relative to the other in order to adjust the insertion loss between the input and output light beams.
REFERENCES:
patent: 3563654 (1971-02-01), Vermande
patent: 3588245 (1971-06-01), Herriott et al.
patent: 3740144 (1973-06-01), Walker
patent: 4095897 (1978-06-01), Tsunazawa et al.
patent: 4315691 (1982-02-01), Perkins et al.
patent: 4519671 (1985-05-01), Curtis et al.
patent: 4645294 (1987-02-01), Oguey et al.
patent: 4770478 (1988-09-01), Cross et al.
patent: 4813756 (1989-03-01), Frenkel et al.
patent: 4878730 (1989-11-01), Wall
patent: 5212745 (1993-05-01), Miller
patent: 5287214 (1994-02-01), Robertson et al.
patent: 5491582 (1996-02-01), Fujita
IBM Technical Disclosure Bulletin, vol. 19, No. 6, E.S. Mathisen, "Discrete Interferenc Filter Monochromator", Nov. 1976.
Y. Suemura, et al. "A Newly Developed Wavelength Tunable Filter For Wavelength Selective Optical Communications System", Inst. Elec. Data Comm. Eng. of Japan, Autumn 1993 Conf., Paper No. B-904.
"Fiber Optic Networks," Paul E. Green, Jr., Prentice-Hall, Englewood Cliffs, New Jersey, Chapter 4, 1993.
"Stable Ultra-Narrow Bandpass Filters," Mike Scobey and Paul Stupik, SPIE's International Symposium, 1994, San Diego, California.
Dicon Fiberoptics, Inc.
Dzierzynski Paul M.
Jr. John Juba
LandOfFree
Motorized tunable filter and motorized variable attenuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Motorized tunable filter and motorized variable attenuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motorized tunable filter and motorized variable attenuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1888289