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AlGaInAs/InP Monolithically Integrated DFB Laser Array

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5 Author(s)
Lianping Hou ; Sch. of Eng., Univ. of Glasgow, Glasgow, UK ; Haji, M. ; Akbar, J. ; Marsh, J.H.
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The monolithic integration of four 1.50-μm range AlGaInAs/InP distributed feed-back lasers with a 4 × 1 multimode-interference optical combiner, a curved semiconductor optical amplifier and an electroabsorption modulator using relatively simple technologies-sidewall grating and quantum well intermixing-has been demonstrated. The four channels span the wavelength range of 1530-1566 nm and can operate separately or simultaneously. The epitaxial structure was designed to produce a far field pattern at the output waveguide facet, which is as small as 21.2°× 25.1°, producing a coupling efficiency with an angled-end single mode fiber at twice that of a conventional device design.

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Quantum Electronics, IEEE Journal of  (Volume:48 ,  Issue: 2 )