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

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 /spl plusmn/0.02-nm thermal wavelength drift is achieved under continuous-wave operation u...

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Bibliographic Details
Published in:IEEE photonics technology letters 2005-10, Vol.17 (10), p.2026-2028
Main Authors: Yiran Liu, Davies, A.R., Ingham, J.D., Penty, R.V., White, I.H.
Format: Article
Language:English
Subjects:
Bragg reflectors
Channel spacing
Channels
Direct intensity modulation
Distributed Bragg reflectors
Dynamical systems
Dynamics
Erbium-doped fiber lasers
Gratings
Laser tuning
Modulation
optical fiber communications
Optical transmitters
Semiconductor lasers
Temperature control
Temperature distribution
Transmitters
tunable lasers
Wavelength division multiplexing
wavelength-division-multiplexing (WDM) applications
Wavelengths
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Summary: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 /spl plusmn/0.02-nm thermal wavelength drift is achieved under continuous-wave operation up to 70/spl deg/C. Dynamic sidemode suppression ratio of greater than 35 dB is consistently obtained under 3.125-Gb/s direct modulation over a 20/spl deg/C-70/spl deg/C temperature range, with wavelength variation of as low as /spl plusmn/0.2 nm. This indicates that more than an order of magnitude reduction in coarse WDM channel spacing is possible using this source.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.856367