Optical receiving assembly for hundred trillion-grade 850nm optical communication and preparation method thereof

Abstract

The invention relates to an optical receiving assembly for hundred trillion-grade 850nm optical communication and a preparation method thereof, and provides an optical receiving assembly for hundred trillion-grade 850nm optical communication, which is compatible with a commercial CMOS process and can replace the hybrid integration in the traditional 850nm optical transceiver and meet the transmission requirement, and a preparation method thereof. The optical receiving assembly is provided with a 850nm optoelectronic single integrated receiving chip, a pipe seat, a pipe cap, a pipe pin and an adapter, wherein the chip is provided with a prepositive amplifying circuit and an optoelectronic detector, and the prepositive amplifying circuit is provided with two mutual resistance type amplifying circuits, a three-grade differential amplifier, an output buffer circuit and a direct current negative feedback circuit. The optoelectronic detector is provided with a low doped P-shaped silicon substrate, a P pit, an N-shaped heavy doping silicon layer, a field oxide layer, an aluminum layer, three SiO2 insulating medium layers and a Si3N4 surface passivating layer from bottom to top in the longitudinal direction. The chip is attached to the pipe seat by a CMOS process; a welding disk of the chip is bonded with the pipe pin by a gold thread; and the pipe cap is covered to be encapsulated with the adapter according to the same shaft.

Description

technical field [0001] The present invention relates to a receiver optical sub-assembly (ROSA), in particular to a 10M / 100Mbps optical transceiver used for 850nm wavelength communication in an optical fiber access network, for 100-megabit 850nm optical communication Light-receiving components and preparation methods thereof. Background technique [0002] The access network is the bridge connecting the optical fiber backbone network and the user or user premise network, and is the implementation system from the local exchange to the user terminal. At present, the technologies for realizing broadband access network mainly include: Asymmetrical Digital Subscriber Line (Asymmetrical Digital Subscriber Line, ADSL), fiber-coaxial hybrid network (Hybrid Fiber Coax, HFC), wireless access technology, high-speed Ethernet technology and optical fiber access technology etc. Among them, the optical fiber access network combined with the mature campus LAN technology can provide 10M / 100M...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of 850nm photodetector that is compatible with commercial CMOS technology and can replace the existing 10M / 100Mbps in view of the shortcomings of existing silicon photodetectors such as poor short-wave response and incomplete compatibility between the preparation process and CMOS integrated circuits. Optical receiving component and preparation method for 100-megabit 850nm optical communication that are mixed and integrated in optical transceivers and can meet transmission requirements

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