Laterally-coupled dual-grating distributed feedback lasers for generating mode-beat Terahertz signals

Hou, L. , Haji, M., Eddie, I., Zhu, H. and Marsh, J. H. (2015) Laterally-coupled dual-grating distributed feedback lasers for generating mode-beat Terahertz signals. Optics Letters, 40(2), pp. 182-185. (doi: 10.1364/OL.40.000182)

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We present a laterally coupled dual wavelength 1.56/1.57-μm AlGaInAs/InP DFB laser, which, by introducing two different grating periods on each sidewall, emits two longitudinal modes simultaneously within the same cavity at a frequency separation of 0.82 THz. The beating signal is stabilized by nonlinear four-wave mixing in an electro-absorption modulator (EAM), located within a monolithically integrated resonant cavity. A stable 0.82-THz beating signal was observed over a wide range of bias parameters in terms of drive currents and bias to the DFB and EAM sections.

Item Type:Articles
Additional Information:This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Glasgow Author(s) Enlighten ID:Zhu, Professor Hongliang and Marsh, Professor John and Eddie, Mr Iain and Hou, Dr Lianping and Haji, Dr Mohsin
Authors: Hou, L., Haji, M., Eddie, I., Zhu, H., and Marsh, J. H.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Optics Letters
Publisher:Optical Society of America
ISSN (Online):1539-4794
Copyright Holders:Copyright © 2015 Optical Society of America
First Published:First published in Optics Letters 40(2):182-185
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
622581RAE Research Exchanges with China and India - Prof. John MarshJohn MarshThe Royal Academy of Engineering (RAE)12/13RECI042ENG - ENGINEERING ELECTRONICS & NANO ENG