Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1988-07-15
1990-02-13
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
455601, G02F 101
Patent
active
049009176
ABSTRACT:
A polarization insensitive optical device is disclosed which is capable of providing direct optical amplification of an input signal of unknown (and possibly varying) polarization. A polarization diversity technique is utilized wherein a polarization beam splitter is used to divide the incoming signal into orthogonal components of known polarization (TE,TM). The orthogonal components are then separately amplified, using a semiconductor laser as the amplifying device. The amplified components are then recombined, either optically or electrically, to form the final output signal.
REFERENCES:
patent: 3722982 (1973-03-01), Brandt
patent: 3971930 (1976-07-01), Fitzmaurice
patent: 4506388 (1985-03-01), Monerie
patent: 4635246 (1987-01-01), Taylor et al.
patent: 4752120 (1988-06-01), Shimizu
patent: 4777358 (1988-10-01), Nelson
patent: 4778238 (1988-10-01), Hicks
Wideband 1.5 um Optical Receiver Using Travelling-Wave Laser Amplifier, M. J. O'Mahony, I. W. Marshall, H. J. Westlake, W. G. Stallard, Electronics Letters, 6 Nov. 1986, vol. 22, No. 23.
Dixon Melvyn
Olsson Nils A.
Tench Robert E.
Tzeng Liang
American Telephone and Telegraph Company AT&T Bell Laboratories
Koba Wendy W.
Messinger Michael
Nelms David C.
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