Optical: systems and elements – Optical modulator
Patent
1998-12-07
2000-05-16
Ben, Loha
Optical: systems and elements
Optical modulator
359189, 341137, 341143, 250214A, 2502141, G02B 2600
Patent
active
060645075
ABSTRACT:
A high speed differential optoelectronic receiver comprises a first photodetector responsive to a first incident amplitude modulated optical signal and operative to develop a first electrical signal, a second photodetector responsive to a second incident amplitude modulated optical signal that is complementary to the first optical signal and operative to develop a second electrical signal, and an amplifier having a first input that is responsive to the first electrical signal and a second input that is responsive to the second electrical signal and is operative to provide a differential output signal that is proportional to the difference between the first and the second electrical signals. Also, a method for transforming complementary amplitude modulated optical signals into a complementary electrical output signal is invented.
REFERENCES:
patent: 5347388 (1994-09-01), Little et al.
patent: 5477370 (1995-12-01), Little et al.
patent: 5591962 (1997-01-01), Koishi et al.
Abbas, Gregory L., et al., "A Dual-Detector Optical Heterodyne Receiver for Local Oscillator Noise Suppression", Oct. 1985, pp. 1110-1122, IEEE J. of Lightwave Technology, vol. LT-3, No. 5.
Alexander, Stephen B., "Design of Wide-Band Optical Heterodyne Balanced Mixer Receivers", Apr. 1987, pp. 523-537, IEEE J. of Lightwave Technology, vol. LT-5, No. 4.
Hayashida Phillip D.
Heflinger Donald G.
Humes Todd E.
Hyde John D.
Ben Loha
Keller Robert W.
TRW Inc.
Yatsko Michael S.
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