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A tunable LGLC laser monolithically integrated with dual-core SSC for tunable XFP modules has been developed. FWHMs of horizontal and vertical FFPs were narrowed to 20° and 25° under 0.5dB low excess loss in C-band.
Direct modulation at 40 Gb/s of a 1.3-mum InGaAlAs distributed feedback ridge waveguide laser is experimentally demonstrated. By combination of the high differential gain of an InGaAlAs multiquantum well active layer, a short cavity length of 100 mum, and a low-resistance notch-free grating, it achieves high bandwidth of 29 GHz and high-extinction ratio of 5 dB at 40-Gb/s modulation. Moreover, the...
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