Multiple-quantum well (MQW) III-nitride diodes can both emit and detect light. In particular, a III-nitride diode can absorb shorter-wavelength photons generated from another III-nitride diode that shares an identical MQW structure because of the spectral overlap between the emission and detection spectra of the III-nitride diode, which establishes a wireless visible light communication system using two identical III-nitride diodes. Moreover, a wireless light communication system using a modulating retro-reflector (MRR) enables asymmetric optical links, which forms a two-way optical link using a single transmitter and receiver. Here, in association with an MRR, we propose, fabricate, and characterize asymmetric optical links using monolithic III-nitride diodes, where one III-nitride diode functions as a transmitter to emit light, an MRR reflects light with the encoded information, another monolithically integrated III-nitride diode serves as a receiver to absorb the reflected light to convert optical signals into electrical ones, and the encoded information is finally decoded. Advanced monolithic III-nitride asymmetric optical links can be developed toward Internet of Things (IoT) deployment based on such multifunction devices.

中文翻译：

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使用单片III氮化物二极管的非对称光链路

多量子阱（MQW）III氮化物二极管可以发射和检测光。特别是，III族氮化物二极管可以吸收由另一个具有相同MQW结构的III族氮化物二极管产生的短波长光子，这是因为III族氮化物二极管的发射光谱和检测光谱之间存在光谱重叠，从而建立了无线可见光。光通信系统，使用两个相同的III型氮化物二极管。此外，使用调制后向反射器（MRR）的无线光通信系统支持非对称光链路，该链路使用单个发射器和接收器形成双向光链路。在这里，结合MRR，我们提出，制造和表征使用单片III型氮化物二极管的不对称光链路，其中一个III型氮化物二极管用作发射器，以发射光，MRR反射具有编码信息的光，另一个单片集成的III族氮化物二极管用作接收器，吸收反射光，将光信号转换为电信号，并最终对编码信息进行解码。可以基于此类多功能设备向物联网（IoT）部署开发高级单片III型氮化物非对称光链路。