AlInGaAs MQWs photonic integration device with directional coupler for multifunction of light emission/detection in infrared range

Xin Li; Shuyu Ni; Yan Jiang; Jialei Yuan; Wei Wang; Yongjin Wang

doi:10.1117/12.2536396

19 November 2019 AlInGaAs MQWs photonic integration device with directional coupler for multifunction of light emission/detection in infrared range

Xin Li, Shuyu Ni, Yan Jiang, Jialei Yuan, Wei Wang, Yongjin Wang

Author Affiliations +

Proceedings Volume 11184, Optoelectronic Devices and Integration VIII; 111840N (2019) https://doi.org/10.1117/12.2536396
Event: SPIE/COS Photonics Asia, 2019, Hangzhou, China

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.

Citation Download Citation

Xin Li, Shuyu Ni, Yan Jiang, Jialei Yuan, Wei Wang, and Yongjin Wang "AlInGaAs MQWs photonic integration device with directional coupler for multifunction of light emission/detection in infrared range", Proc. SPIE 11184, Optoelectronic Devices and Integration VIII, 111840N (19 November 2019); https://doi.org/10.1117/12.2536396

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KEYWORDS

Directional couplers

Infrared radiation

Photonic devices

Beam propagation method

Infrared detectors

Infrared photography

Photons

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