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Low-threshold ridge waveguide lasers at λ = 1.5 μm

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4 Author(s)
C. J. Armistead ; STC Technology Limited, Harlow, UK ; S. A. Wheeler ; R. G. Plumb ; R. W. Musk

Ridge waveguide lasers at 1.5 μm wavelength have been fabricated by liquid-phase epitaxy with CW thresholds of 18 mA at 20°C, single transverse mode operation to 25 mW and quantum efficiencies over 20% per facet. Thresholds have increased by less than 2 mA in 10000 h for devices maintained at 5 mW output and 50°C. Packaged devices with single-mode fibre tails have shown excellent performance in systems trials at 2.4 Gbit/s.

Published in:

Electronics Letters  (Volume:22 ,  Issue: 21 )