Stabilizing LD power in wide temperature range by means of optical filter

We propose an optical power stabilized LD module without APC circuit and monitor PD. It utilizes the temperature dependence of the LD wavelength. With the designed filter, the power penalty is suppressed to 0 dB at full operating temperature range and the optical signal power level reduction is only...

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Bibliographic Details
Main Authors: Jin-Ho Yoo, Nack-Jin Chung, Gil-Ho Yang, In-Shik Park
Format: Conference Proceeding
Language:English
Subjects:
Circuits
Indium phosphide
Monitoring
Optical design
Optical fiber filters
Optical filters
Power filters
Signal design
Temperature dependence
Temperature distribution
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Description
Summary:We propose an optical power stabilized LD module without APC circuit and monitor PD. It utilizes the temperature dependence of the LD wavelength. With the designed filter, the power penalty is suppressed to 0 dB at full operating temperature range and the optical signal power level reduction is only 1.2 dB at 15/spl deg/C and 0 dB at 70/spl deg/C in 1.3 /spl mu/m InGaAsP/InP FP MQW LD. We also demonstrate the method by means of the fiber-coupler-filter.
DOI:10.1109/APCC.1999.820539