High channel count and high precision channel spacing multi-wavelength laser array for future PICs

Shi, Y. et al. (2014) High channel count and high precision channel spacing multi-wavelength laser array for future PICs. Scientific Reports, 4, p. 7377. (doi: 10.1038/srep07377) (PMID:25488111) (PMCID:PMC4260219)

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Multi-wavelength semiconductor laser arrays (MLAs) have wide applications in wavelength multiplexing division (WDM) networks. In spite of their tremendous potential, adoption of the MLA has been hampered by a number of issues, particularly wavelength precision and fabrication cost. In this paper, we report high channel count MLAs in which the wavelengths of each channel can be determined precisely through low-cost standard μm-level photolithography/holographic lithography and the reconstruction-equivalent-chirp (REC) technique. 60-wavelength MLAs with good wavelength spacing uniformity have been demonstrated experimentally, in which nearly 83% lasers are within a wavelength deviation of ±0.20 nm, corresponding to a tolerance of ±0.032 nm in the period pitch. As a result of employing the equivalent phase shift technique, the single longitudinal mode (SLM) yield is nearly 100%, while the theoretical yield of standard DFB lasers is only around 33.3%.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Marsh, Professor John and Hou, Dr Lianping
Authors: Shi, Y., Li, S., Chen, X., Li, L., Li, J., Zhang, T., Zheng, J., Zhang, Y., Tang, S., Hou, L., Marsh, J. H., and Qiu, B.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Scientific Reports
Publisher:Nature Publishing Group
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in Scientific Reports 4:7377
Publisher Policy:Reproduced under a Creative Commons License

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