H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/1.8
H04J 14/02 (2006.01) H01S 5/062 (2006.01) H04B 10/142 (2006.01) H04N 7/22 (2006.01) H01S 5/00 (2006.01) H01S 5/227 (2006.01)
Patent
CA 2021516
An amplitude-modulated vestigial-sideband, television channel sub-carrier multiplexed optical fiber transmission system includes a laser diode operating linearly throughout the desired range of multiplex frequencies. Such linear laser diode operation is accomplished by limiting leakage current within the laser diode to a very low level. The composite second-order distortion in the optical output signal from the laser diode is down typically 50 db from the video carrier for each channel. For some laser diodes that exhibit slow turn-on in the L-I characteristic, there is a point of inflection in the L-I curve. Operation with the laser biased at or near this point results in extremely linear performance, even though the laser may have insufficient blocking of leakage current to otherwise produce acceptable linearity.
Bodeep George E.
Darcie Thomas E.
Flynn Edward J.
Lipson Jan
Mcgrath Carl J.
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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