Title:
METHOD AND APPARATUS FOR BIAS AND ALIGNMENT CONTROL IN AN OPTICAL SIGNAL TRANSMITTER
Document Type and Number:
WIPO Patent Application WO2006065887
Kind Code:
A3
Abstract:
A method and apparatus for controlling bias and alignment in an optical signal transmitter for providing intensity modulation and DPSK modulation to an optical signal, e.g. in an RZ-DPSK modulation format. Output power in dither signals applied to the bias signals may be detected by a low speed photodetector. One or more of the bias signals may be adjusted in a low speed control loop in response to an error signal obtained by mixing the detected signal with the low frequency dither signals.
Inventors:
MAZURCZYK MATTHEW V (US)
SABET SAMEH (US)
SABET SAMEH (US)
Application Number:
PCT/US2005/045215
Publication Date:
November 16, 2006
Filing Date:
December 14, 2005
Export Citation:
Assignee:
TYCO TELECOMM US INC (US)
MAZURCZYK MATTHEW V (US)
SABET SAMEH (US)
MAZURCZYK MATTHEW V (US)
SABET SAMEH (US)
International Classes:
H04B10/04
Foreign References:
| US6952534B1 | 2005-10-04 | |||
| US6972842B2 | 2005-12-06 |
Other References:
See also references of EP 1825612A4
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