Optical: systems and elements – Optical amplifier
Patent
1995-08-29
1996-11-19
Hellner, Mark
Optical: systems and elements
Optical amplifier
359133, 359180, H01S 300, H04J 1408
Patent
active
055768814
ABSTRACT:
A multi-frequency optical signal source is adapted to include a plurality of power splitters, each connected to obtain a portion of an electrical data signal used to modulate a different one of the plurality of input optical sources; a plurality of delay means, each connected to an output of a different power splitter, each delay means providing a different predetermined signal delay; and an electrical signal combiner having a plurality of inputs, each input connected to a different output of the respective delay means, for electrically combining a portion of the modulation signal received from the connected delay means to form a combined electrical signal at an output of the electrical signal combiner, the output of the combiner being connected to control biasing of the optical output amplifier. The resulting multi-frequency optical signal source exhibits reduced signal distortion and crosstalk by keeping the carrier density constant in its shared optical output amplifier.
REFERENCES:
patent: 5017885 (1990-09-01), Saleh
patent: 5136671 (1991-08-01), Dragone
patent: 5305134 (1994-04-01), Tsushima et al.
patent: 5396360 (1995-03-01), Majima
patent: 5504609 (1996-04-01), Alexander et al.
Doerr Christopher R.
Joyner Charles H.
Zirngibl Martin
Hellner Mark
Lucent Technologies - Inc.
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