DocumentCode :
753021
Title :
Long-wavelength vertical-cavity surface-emitting lasers for high-speed applications and gas sensing
Author :
Hofmann, W. ; Amann, M.-C.
Author_Institution :
Walter Schottky Inst., Garching
Volume :
2
Issue :
3
fYear :
2008
fDate :
6/1/2008 12:00:00 AM
Firstpage :
134
Lastpage :
142
Abstract :
Long-wavelength InGaAlAs-InP vertical-cavity surface-emitting lasers (LW-VCSELs) covering the wavelength range from 1.3 to 2.3 mum are presented. Furthermore, these lasers can be fabricated in a novel high-speed design-reducing parasitics to enable bandwidths in excess of 11 GHz at 1.55 mum. To the best of the authors´ knowledge, this is the fastest 1.55 mum VCSEL ever presented. As a proof-of-concept one- and two-dimensional arrays have been fabricated with high yield. All devices use a buried tunnel junction for current confinement and a dielectric backside reflector with integrated electroplated gold-heatsink. This concept enables CW operation at room temperature with typical single-mode output powers above 1 mW. Both, wavelength range and modulation performance, together with VCSEL features such as operation voltage around IV and power consumption as low as 10-20 mW enable applications in tunable diode laser spectroscopy (TDLS) and optical data transmission. Error-free data transmission at 10 Gbit/s over 22 km which can be readily applied in uncooled coarse wavelength division multiplex passive optical networks is presented. A laser hygrometer using a 1.84 mum VCSEL demonstrates the functionality of TDLS systems with VCSELs.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; gas sensors; heat sinks; hygrometers; indium compounds; laser cavity resonators; laser tuning; measurement by laser beam; optical fabrication; optical fibre networks; optical modulation; semiconductor laser arrays; spectrochemical analysis; surface emitting lasers; wavelength division multiplexing; CW operation; InGaAlAs-InP; bit rate 10 Gbit/s; buried tunnel junction; current confinement; dielectric backside reflector; distance 22 km; error-free data transmission; high-speed design-reducing parasitics; integrated electroplated gold-heatsink; laser fabrication; laser hygrometer; long-wavelength VCSEL; modulation performance; one-dimensional arrays; optical data transmission; power 10 muW to 20 muW; power consumption; single-mode output powers; temperature 293 K to 298 K; tunable diode laser spectroscopy; two-dimensional arrays; uncooled coarse WDM passive optical networks; vertical-cavity surface-emitting lasers; wavelength 1.3 mum to 2.3 mum; wavelength division multiplexing;
fLanguage :
English
Journal_Title :
Optoelectronics, IET
Publisher :
iet
ISSN :
1751-8768
Type :
jour
DOI :
10.1049/iet-opt:20070013
Filename :
4543891
Link To Document :
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