Design for single-mode asymmetric quarter-wavelength-shifted DFB laser with high differential efficiency
- 21 May 1987
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 23 (11) , 598-599
- https://doi.org/10.1049/el:19870429
Abstract
An asymmetric quarter-wavelength-shifted DFB laser which has high differential efficiency and a large threshold gain difference under high-power operation has been designed taking the spatial hole-burning effect into account. The optimum kL was found to be about 1.4 in the laser, which has an asymmetry S/L of 0.15, where S is the distance from the centre to the phase shift position and L is the laser length.Keywords
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