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AlInGaAs MQWs photonic integration device with directional coupler for multifunction of light emission/detection in infrared range
Author(s): Xin Li; Shuyu Ni; Yan Jiang; Jialei Yuan; Wei Wang; Yongjin Wang
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Paper Abstract

We propose an AlInGaAs MQWs photonics integration device with directional coupler for multifunction of light emission/detection in infrared range, and realize the device on an InP based wafer. Two identical AlInGaAs MQWdiodes, working as light emission/detection device independently, are fabricated by two-step etching process on one wafer and connected by a directional coupler. The photonic integration device is prepared by two dry etching for III-V materials and electron beam evaporation for metal electrode. The MQW-diode for emission loaded with positive bias voltage operates in transmit mode, and emits light in infrared range. The MQW-diode for detection loaded with negative bias voltage operates in receive mode, and absorbs infrared photons transmitted by directional coupler connecting the two MQW-diodes. The absorbed infrared photons leads to a change in internal electric voltage across the p-n junction of the MQW-diode for detection. The opto-electrical characterization including current–voltage and electroluminescence spectrum are conducted. The coupling performance between the two MQW-diodes is also experimentally characterized by analyzing the induced photocurrent of MQW-diode for detection. We perform finite element simulation by beam propagation method (BPM) to evaluate the light coupling performance for the directional coupler. An on-chip communication test is also conducted to demonstrate the potential application of photonics integration device for transmission optical signal in infrared range.

Paper Details

Date Published: 19 November 2019
PDF: 7 pages
Proc. SPIE 11184, Optoelectronic Devices and Integration VIII, 111840N (19 November 2019); doi: 10.1117/12.2536396
Show Author Affiliations
Xin Li, Nanjing Univ. of Posts and Telecommunications (China)
Shuyu Ni, Nanjing Univ. of Posts and Telecommunications (China)
Yan Jiang, Nanjing Univ. of Posts and Telecommunications (China)
Jialei Yuan, Nanjing Univ. of Posts and Telecommunications (China)
Wei Wang, Nanjing Univ. of Posts and Telecommunications (China)
Yongjin Wang, Nanjing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 11184:
Optoelectronic Devices and Integration VIII
Xuping Zhang; Baojun Li; Changyuan Yu; Xinliang Zhang; Daoxin Dai, Editor(s)

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