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Optical Engineering

Wideband 20-wavelength 1.3-μm distributed feedback semiconductor laser array using common holographic exposure
Author(s): Linlin Lu; Renjia Guo; Rui Liu; Xuqi Chen; Hao He; Lianyan Li
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Paper Abstract

The first experimental realization of a 20-wavelength distributed feedback semiconductor laser array with a λ/4 equivalent phase shift using common holographic exposure in the 1.3-μm wavelength domain is reported. It shows very good linearity in lasing wavelengths with a deviation from −0.5 to 0.45 nm. The threshold currents are between 13 and 17 mA. The side mode suppression ratios are all larger than 40 dB under the bias currents of 70 mA. The slope efficiencies at room temperature are all about 0.4  W/A. However, it only changes the micrometer-level sampling structures while the seed grating is uniform. Therefore, its fabrication cost is low.

Paper Details

Date Published: 27 July 2015
PDF: 4 pages
Opt. Eng. 54(7) 076108 doi: 10.1117/1.OE.54.7.076108
Published in: Optical Engineering Volume 54, Issue 7
Show Author Affiliations
Linlin Lu, Jiangsu Posts & Telecommunications Planning & Designing Institute Co., Ltd. (China)
Nanjing Univ. (China)
Renjia Guo, Nanjing Univ. (China)
Rui Liu, Nanjing Univ. (China)
Xuqi Chen, Jiangsu Posts & Telecommunications Planning & Designing Institute Co., Ltd. (China)
Hao He, Jiangsu Posts & Telecommunications Planning and Designing Institute Co. Ltd. (China)
Lianyan Li, Nanjing Univ. (China)


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