An Eight-Wavelength BH DFB Laser Array With Equivalent Phase Shifts for WDM Systems

In this letter, we report an eight-wavelength monolithically integrated buried heterostructure distributed feedback laser array with quarter-wave equivalent phase shifts. The laser array operating at 1.3 μm has a chip size of 2 mm × 250 μm. Lasing channel spacing is designed to be 800 GHz (~4.6 nm a...

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Bibliographic Details
Published in:IEEE photonics technology letters 2014-08, Vol.26 (16), p.1593-1596
Main Authors: Jingsi Li, Song Tang, Wang, Jeffery, Yue Liu, Xiangfei Chen, Julian Cheng
Format: Article
Language:English
Subjects:
Arrays
Distributed feedback devices
Gratings
Laser modes
Laser tuning
Lasers
Semiconductor laser arrays
Wave division multiplexing
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Summary:In this letter, we report an eight-wavelength monolithically integrated buried heterostructure distributed feedback laser array with quarter-wave equivalent phase shifts. The laser array operating at 1.3 μm has a chip size of 2 mm × 250 μm. Lasing channel spacing is designed to be 800 GHz (~4.6 nm at 1.3 μm). The laser array exhibits accurate wavelength control and stable single mode lasing operation over a wide range of injection currents and different ambient temperatures. The measured linewidth of these lasers is 278 kHz at 65-mA bias current. In addition, the lasing wavelength of the whole laser array can be tuned continuously over 38.3 nm without mode hopping. The proposed method offers a practical approach of integrated laser array fabrication for wavelength-division multiplexing systems.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2014.2327113