Coherent light generators – Particular beam control device – Optical output stabilization
Reexamination Certificate
2007-03-16
2010-12-21
Rodriguez, Armando (Department: 2828)
Coherent light generators
Particular beam control device
Optical output stabilization
C372S033000, C372S038070
Reexamination Certificate
active
07856037
ABSTRACT:
The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that output of the optical amplifier avoids the effects of operating an optical gain medium in a non-linear (kink) region of an L-I curve. The method generally includes operating an optical gain medium in a fully off state or fully on state above the kink region with a PWM signal. In another aspect, the effects of the kink region may be compensated for by utilizing a lookup table. A sample of the optical power of an amplified optical signal may be used to select an entry in the lookup table that compensates for non-linearities in the kink region. In yet a further aspect, a lookup table may be used to control a pulse modulator to compensate for non-linearites in the kink region of the L-I curve.
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Butler Douglas Llewellyn
Dahl Scott R.
Gurusami Aravanan
Wigley Peter G.
Zahnley Timothy K.
Oclaro (North America), Inc.
Patterson & Sheridan L.L.P.
Rodriguez Armando
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