CUED Publications database

Uncooled DBR laser directly modulated at 3.125 Gb/s as athermal transmitter for low-cost WDM systems

Liu, Y and Davies, AR and Ingham, JD and Penty, RV and White, IH (2005) Uncooled DBR laser directly modulated at 3.125 Gb/s as athermal transmitter for low-cost WDM systems. IEEE Photonics Technology Letters, 17. pp. 2026-2028. ISSN 1041-1135

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Abstract

An uncooled three-section tunable distributed Bragg reflector laser is demonstrated as an athermal transmitter for low-cost uncooled wavelength-division-multiplexing (WDM) systems with tight channel spacing. A ±0.02-nm thermal wavelength drift is achieved under continuous-wave operation up to 70 °C. Dynamic sidemode suppression ratio of greater than 35 dB is consistently obtained under 3.125-Gb/s direct modulation over a 20 °C-70 °C temperature range, with wavelength variation of as low as ±0.2 nm. This indicates that more than an order of magnitude reduction in coarse WDM channel spacing is possible using this source. © 2005 IEEE.

Item Type: Article
Uncontrolled Keywords: Direct intensity modulation Optical fiber communications Semiconductor lasers Tunable lasers Wavelength-division-multiplexing (WDM) applications
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:26
Last Modified: 08 Dec 2014 02:31
DOI: 10.1109/LPT.2005.856367