Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2005-03-01
2005-03-01
Ip, Paul (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S096000
Reexamination Certificate
active
06862310
ABSTRACT:
A method is disclosed in which the principle of phase-coupling is used to stabilize the polarization of laser radiation emitted by a plurality of phase-coupled vertical cavity surface emitting laser elements. Due to a suitable coupling strength between adjacent VCSEL elements, the probability of polarization flips of VCSEL devices operated in the single mode region is zero or at least drastically reduced. Moreover, a VCSEL device is disclosed, comprising a polarization adjusting means for controlling the polarization direction of an arrangement of a plurality of phase-coupled VCSEL elements, wherein the polarization direction of each VCSEL element is substantially kept constant.
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di Sopra Fabrice Monti
Moser Michael
Avalon Photonics Ltd.
Fattibene Arthur T.
Fattibene Paul A.
Fattibene & Fattibene
Ip Paul
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