Monolithic Optical Injection Locking DFB Lasers Based on Four PhaseShifts Sampling Sections

Fan, Y., Zhang, Y., Sun, Y., Yuan, B., Marsh, J. H. and Hou, L. (2023) Monolithic Optical Injection Locking DFB Lasers Based on Four PhaseShifts Sampling Sections. In: CLEO/Europe-EQEC 2023, Munich, Germany, 26 - 30 June 2023, ISBN 9798350345995 (doi: 10.1109/CLEO/Europe-EQEC57999.2023.10231480)

Abstract

Optical injection locking has shown many advantages such as reducing the noise of a slave laser, reducing the laser linewidth, improving the bandwidth and suppressing the frequency chirp [1], [2]. Achieving a locked state often requires a tunable external cavity laser or a well-matched DFB laser since the operating wavelength and polarization of the master laser and the slave laser must be matched. In this paper, we demonstrate a monolithic optical injection locking (MOIL) DFB laser based on four phase-shifts (4PS) sampling sections. Based on the 4PS structure, the lasing wavelength can be precisely controlled by designing the sampling period, meanwhile, the effective grating coupling coefficient K of the +1 st channel is significantly enhanced, equal to 0.9 times that of a uniform seed grating [3]. The device is based on a sidewall grating structure, requiring only one metalorganic vapor-phase epitaxy (MOVPE) step and one III-V material etching step to complete the fabrication process.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Sun, Yiming and Yuan, Bocheng and Hou, Dr Lianping and FAN, YIZHE and Marsh, Professor John
• Authors: Fan, Y., Zhang, Y., Sun, Y., Yuan, B., Marsh, J. H., and Hou, L.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• ISSN: 2833-1052
• ISBN: 9798350345995
• Copyright Holders: Copyright © 2023 IEEE
• First Published: First published in 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

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