A highly sensitive monolithic optical receiver, applicable in optical fiber and wireless communication is presented. The proposed chip is capable of processing data rates of up to 10 Mb / s and offers compatibility to standard CMOS logic by creating full 3.3-V output swing. The photodetector of the system is carried out as a large-area fully integrated avalanche photodiode with a diameter of 800 μm and a high responsivity to red light with a wavelength of 675 nm. The receiver features pseudo differential signal processing with offset cancellation feedback to achieve desensitization to background light irradiation usually appearing with optical wireless communication. Additionally, common-mode feedback was implemented to prevent pulse width distorted output signals. Measurements at 2.5, 5, and 10 Mb / s reveal high sensitivities of −50.4, −47.65, and −42.7 dBm, respectively, for BER < 10 − 9 in dark conditions. For the design, a 0.35-μm CMOS process was chosen.

中文翻译：

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具有大面积雪崩光电二极管的高灵敏度单片光电接收器，用于低数据速率的光无线通信

提出了一种适用于光纤和无线通信的高灵敏度单片光接收器。建议的芯片能够处理高达 10 Mb/s 的数据速率，并通过创建完整的 3.3V 输出摆幅来提供与标准 CMOS 逻辑的兼容性。该系统的光电探测器采用大面积全集成雪崩光电二极管，直径为 800 μm，对波长为 675 nm 的红光具有高响应度。接收器具有带偏移抵消反馈的伪差分信号处理功能，以实现对光无线通信中通常出现的背景光辐射的减敏。此外，还实施了共模反馈以防止脉冲宽度失真的输出信号。在 2.5、5 和 10 Mb / s 下的测量显示 -50.4、-47.65、和 -42.7 dBm，对于 BER < 10 - 9 在黑暗条件下。对于设计，选择了 0.35-μm CMOS 工艺。