Optical communications – Transmitter – Including compensation
Reexamination Certificate
2008-03-24
2011-12-06
Park, Kinam (Department: 2828)
Optical communications
Transmitter
Including compensation
C398S195000, C398S192000, C398S182000
Reexamination Certificate
active
08073341
ABSTRACT:
The present disclosure relates to a WDM-PON (wavelength division multiplexed-passive optical network) optical transmitter; and, more particularly, to a system for controlling driving current of the WDM-PON optical transmitter. The present disclosure provides a driving current control method of the optical transmitter for in use in the WDM-PON, including: setting an attenuation value of a variable optical attenuator to X; detecting an optical power Px received by a monitoring photo diode of the optical transmitter; setting an attenuation value of the variable optical attenuator to Y; detecting an optical power Py received by the monitoring photo diode of the optical transmitter; calculating an optical power Pout of an optical signal outputted from a common terminal of a 1×N optical multiplexer/demultiplexer based on the detected optical power Px and Py; and controlling a driving current based on the calculated optical power Pout.
REFERENCES:
patent: 2004/0101305 (2004-05-01), Jung et al.
patent: 2004/0208208 (2004-10-01), Shin et al.
patent: 2006/0140548 (2006-06-01), Shin et al.
patent: 2007/0081823 (2007-04-01), Lee et al.
Byun Jae Oh
Kim Kyoung Min
Cantor & Colburn LLP
Luxpert Technologies Co., Ltd.
Park Kinam
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