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High power narrow divergence DFB laser diode at 1.55 μm

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3 Author(s)
H. Jeon ; SDL Inc., San Jose, CA, USA ; A. Mathur ; M. Ziari

Over 115 mW single longitudinal mode laser output was obtained from an InGaAsP MQW DFB waveguide laser diode integrated with a vertically tapered mode expander. The circular cross-sectional laser beam profile with the FWHM divergence angles of 9.5°×13.5° enabled a high coupling efficiency of 63% directly into a lensed singlemode fibre, resulting in a fibre coupled output of over 70 mW

Published in:

Electronics Letters  (Volume:34 ,  Issue: 13 )