Coherent light generators – Particular beam control device – Modulation
Patent
1993-07-23
1994-09-13
Healy, Brian
Coherent light generators
Particular beam control device
Modulation
372 26, 372 70, 372 33, 372 38, 330 75, 330149, 359249, 359344, 359345, 359187, 359188, H01S 310, H01S 3091
Patent
active
053475291
ABSTRACT:
Method and apparatus for generating a distortion-free, frequency-modulated optical signal, whereby this signal from an optical semiconductor laser driven with a modulating voltage is distorted by the modulating voltage due to a thermally conditioned frequency transfer function of the transmitter for the modulation frequency of the modulating voltage. For generating the distortion-free, frequency-modulated optical signal, the modulating voltage and/or the distorted, frequency-modulated optical signal itself and/or a superimposition signal containing this optical signal is subjected to a distortion that entirely or partially compensates the distortion of this optical signal. This method is simple and, in combination with receivers for the frequency-modulated optical signal, avoids sensitivity losses.
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Healy Brian
Siemens Aktiengesellschaft
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