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Cavity length independent continuous repetition rate tuning of a self-seeded gain-switched Fabry-Pérot laser

Maher, Robert D. and Anandarajah, Prince M. and Barry, Liam P. (2007) Cavity length independent continuous repetition rate tuning of a self-seeded gain-switched Fabry-Pérot laser. IEEE Photonics Technology Letters, 19 (20). pp. 1625-1627. ISSN 1041-1135

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We propose a novel method that allows continuous repetition rate tuning of a self-seeded gain-switched Fabry-Perot laser without the need for change in cavity length. This is achieved by employing a linearly chirped fiber Bragg grating with a large dispersion parameter. The dispersed pulses overlap to produce a continuous-wave-like feedback into the gain-switched laser cavity. By using the proposed experimental setup, we demonstrate pulses portraying sidemode suppression ratios of at least 30 dB and widths of about 30 ps over the entire repetition rate tuning range of 2.5-10 GHz.

Item Type:Article (Published)
Uncontrolled Keywords:Gain-switching; linearly chirped fiber Bragg grating (LC FBG); optical pulse generation; self seeding; sidemode; suppression ratio (SMSR).
Subjects:Engineering > Optical communication
Physical Sciences > Lasers
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Publisher:Institute of Electrical and Electronics Engineers
Official URL:
Copyright Information:Copyright © 2007 IEEE. Reprinted from IEEE Photonics Technology Letters.This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the Dublin City University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
ID Code:83
Deposited On:28 Jan 2008 by DORAS Administrator. Last Modified 09 Feb 2017 12:22

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