Coherent light generators – Particular active media – Semiconductor
Patent
1992-11-20
1994-06-21
Healy, Brian
Coherent light generators
Particular active media
Semiconductor
372 49, 372 50, 372 97, 372 99, H01S 318, H01S 319
Patent
active
053234111
ABSTRACT:
A laser diode array device (1, 11) according to a first aspect of the invention comprises a plurality of laser diode elements, some of which are formed as monitor laser diode elements for controlling the optical output of the remaining laser diode elements so that the device can operate at a power consumption rate by far lower than that of a conventional laser diode array device where the component laser diode elements needs to be individually controlled, while it can be assembled to an enhanced density. A laser diode array device (21) according to a second aspect of the invention comprises laser diode elements for signal transmission and monitor laser diode elements realized in the form of resonant cavities having a same length and sharing a common reflecting surface of a high-reflection film disposed at an end thereof so that the laser diode elements for signal transmission and the monitor laser diode elements show substantially identical light emitting characteristics.
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Iwase Masayuki
Shirasaka Yusei
Healy Brian
The Furukawa Electric Co. Ltd.
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