Dual-channel GEPON OLT CSFP (Gigabitcapable Passive Optical Network Optical Line Terminal Compact Small Form Factor Pluggable) optical module

Abstract

The invention discloses an EPON OLT (Ethernet Passive Optical Network Optical Line Terminal) optical module, in particular to a dual-channel GEPON OLT CSFP (Gigabitcapable Passive Optical Network Optical Line Terminal Compact Small Form Factor Pluggable) optical module, which comprises a power supply soft starting circuit, a microcontroller, an I channel laser drive circuit, an I channel amplitude limit amplification circuit, an I channel avalanche photodiode boosted circuit, an I channel RSSI (Received Signal Strength Indicator) image current source and a sampling maintaining circuit, two I channel optical receiving and sending assemblies, a 20-pin CSFP gold finger connector and an I channel LC interface. Due to the I channel optical receiving and sending assemblies, the optical module can work in a one-path and one-channel standard SFPEPONOLT mode which is compatible with the traditional EPON system, and can also work in a dual-channel CSFPEPONOLT mode with doubled port density and data throughput, thus a system is favorably maintained in smooth transition and upgrading, and system upgrading cost and equipment input cost of an operator are effectively reduced.

Description

technical field [0001] The invention relates to an optical line terminal (GEPON OLT) technology of a Gigabit Ethernet passive optical network, in particular to an optical module adopting CSFP packaging and integrating a dual-channel dual-channel GEPON OLT. Background technique [0002] As a mainstream technology for fixed access, Gigabit Ethernet passive optical network has mature solutions and stable performance, and is gradually realizing a large number of commercial applications. The SFP single-fiber dual-port transceiver optical module is a small hot-swappable optical module that conforms to the MSA protocol. It provides the function of bidirectional data transmission in the optical communication system. The SFP single-fiber dual-port optical module has the characteristics of high transmission rate and small size. The traditional SFP single-fiber dual-port EPON OLT optical module includes a microcontroller, an APD boost circuit, a mirror current source and a sample-and-h...

AI Technical Summary

Problems solved by technology

The traditional SFP single-fiber dual-port EPON OLT optical module uses a single single-fiber bidirectional transceiver device to receive and send data, the data capacity is limited, and the utilization rate of network equipment is low

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