Mr. Wei Wang Profile

Wei Wang

at Zhejiang Univ

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Proceedings Article | 12 December 2018 Paper

InGaAsP/InP based Q-modulated slotted Fabry-Perot laser employing lossy half-wave trenches

Wei Wang, Yimin Xia, Zhipeng Hu, Jianjun He

Proceedings Volume 10849, 108490M (2018) https://doi.org/10.1117/12.2504700

KEYWORDS: Modulators, Reflectivity, Modulation, Absorption, Reflectors, Quantum wells

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A 3-section deep etched Q-modulated slotted Fabry-Perot laser (QMSFP) composed of a modulator, a gain section and a filter is designed and simulated with transfer matrix method and traveling wave method and finally experimentally demonstrated in this paper. This QMSFP has been fabricated in 1550 nm InGaAsP/InP-MQW wafer with Quantum Well Intermixing (QWI) technology. The static measurement results show that an extinction ratio (ER) of 13.6 dB can be achieved with the modulator length of 66.4 μm and the reverse bias of 0 V and 6.5 V at specific injection current in the gain section and filter section. The lasing threshold current difference between ON and OFF states can approach 10 mA under fixed current of the filter section. The Side Mode Suppression Ratio (SMSR) of the ON state is >34 dB with the measured output power from the front face >149 μW. There is no mode-hop between ON and OFF state. The dynamic simulation results under high speed modulation will also be presented.

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