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L-Band Wavelength-Tunable MQW Fabry–Pérot Laser Using a Three-Segment Structure

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5 Author(s)
Ke Liu ; Key Lab. of Optoelectron. Technol., Beijing Univ. of Technol., Beijing, China ; Si Xuan Mu ; Yu Lu ; Bao Lu Guan
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A three-segment structure L-band wavelength tunable multi-quantum-well Fabry-Pérot (FP) laser is realized and characterized. Wavelength-tuning is achieved by current injection into the unpumped segments. Depending on the pumping schemes, the lasing wavelength undergoes either red or blue shift. Red-shifting of the lasing wavelength is caused by band-gap shrinkage effect because of Joule heating. Blue-shifting of the lasing wavelength is mainly caused by band-gap filling effect. At room temperature, a tuning range of ~12.8 nm is obtained. The tunable FP laser diode with simple architecture has potential applications in L-band optical communication systems.

Published in:

Photonics Technology Letters, IEEE  (Volume:25 ,  Issue: 18 )