Optical communications – Transmitter – Including compensation
Reexamination Certificate
2007-05-29
2007-05-29
Tran, Dzung (Department: 2613)
Optical communications
Transmitter
Including compensation
C398S120000, C398S206000
Reexamination Certificate
active
10045661
ABSTRACT:
Systems and methods for use with an optical communication beam are disclosed. The system allows the beam of light to operate at an adequate power level that provides a robust optical link while minimizing any safety risk to humans. The system calibrates and controls the gain for an avalanche photodiode detector (APD). A detector circuit is used to calibrate the APD. Once calibrated, the detector circuit further provides an electrical bias to the APD to process or condition the electrical signal to produce a detector output. The systems and methods disclosed herein attenuate the power level of an incoming communication beam to prevent oversaturation of an APD. The system further provides an alignment signal, which is effective over a wide dynamic range of incoming power levels.
REFERENCES:
patent: 3743385 (1973-07-01), Schaefer
patent: 4355893 (1982-10-01), Chicklis
patent: 4453806 (1984-06-01), Wick
patent: 4902127 (1990-02-01), Byer et al.
patent: 5060304 (1991-10-01), Solinsky
patent: 5181211 (1993-01-01), Burnham et al.
patent: 5383200 (1995-01-01), Barrett et al.
patent: 5451765 (1995-09-01), Gerber
patent: 5685636 (1997-11-01), German
patent: 5726786 (1998-03-01), Heflinger
patent: 5745515 (1998-04-01), Marta et al.
patent: 5777768 (1998-07-01), Korevaar
patent: 5837996 (1998-11-01), Keydar
patent: 6014236 (2000-01-01), Flaherty
patent: 6031219 (2000-02-01), Shuke
patent: 6049593 (2000-04-01), Acampora
patent: 6055490 (2000-04-01), Dunne
patent: 6222660 (2001-04-01), Traa
patent: 2003/0066947 (2003-04-01), Alwan et al.
Alwan James J.
Binun Paul William
Bloom Scott Harris
Chan Victor J.
Hoiseth Glenn Claude
Kiribati Wireless Ventures LLC
Tran Dzung
LandOfFree
Attenuation and calibration systems and methods for use with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Attenuation and calibration systems and methods for use with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Attenuation and calibration systems and methods for use with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3800478