Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1991-09-20
1993-04-06
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Optical output stabilization
372 28, H01S 313
Patent
active
052009670
ABSTRACT:
The operating point is stabilized at the MAX or the MIN of its optical frequency discriminating characteristic. Under the stabilized operating point, the detected difference between the average of the light intensity and a set value is fed back to a data modulator so that the average value converges on a set value when a predetermined optical frequency deviation is produced. The operating point is also stabilized at the MED of said characteristic. Under the stabilized operating point, a low-frequency signal component is extracted from an electric signal output by means of synchronous detection. The operating point is stabilized at the MAX or the MIN of said characteristic. Under the stabilized operating point, a low-frequency signal component is twice in frequency by means of synchronous detection. In the fourth and fifth aspects, means such as synchronous detection is not required for the stabilization control of an operating point.
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Miyata Hideyuki
Onaka Hiroshi
Fujitsu Limited
Jr. Leon Scott
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