Dual-rate receiving device in optical transceiver

Abstract

The invention discloses a dual-rate receiving device in an optical transceiver, which is suitable for the optical transceiver, and comprises a dual-rate optical receiving module, a dual-rate amplitude limiting amplifying circuit unit, a first rate amplitude limiting amplifier data path and a second rate amplitude limiting amplifier data path, wherein signals output by the dual-rate amplitude limiting amplifying circuit unit are respectively input into the first rate amplitude limiting amplifier data path and the second rate amplitude limiting amplifier data path so as to obtain data with different rates, and the data with the different rates are output to a system host machine. By using the technical scheme, the system host machine can receive data from the amplitude limiting amplifier data path with a corresponding working rate, has higher receiving sensitivity for high-rate and low-rate optical data signals and can receive optical signals formed by time division multiplex (TDM) for dual-rate data with lower cost.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a low-cost dual-rate receiving device applied in an optical transceiver module. Background technique [0002] In the dual-rate receiver of the 10 Gigabit Ethernet passive optical network optical line terminal optical transceiver module, in order to be compatible with the existing Gigabit Ethernet passive optical network optical network unit equipment, the 10 Gigabit Ethernet passive optical network optical The line terminal optical transceiver module needs to be able to receive 10.3125G and 1.25G burst optical signals. If the receiver work design is optimized at the high-speed rate of 10.3125G, the receiving sensitivity at 1.25G will be degraded, otherwise, the performance of the high-speed receiver will not be guaranteed. [0003] In order to ensure that the receiver has high receiving sensitivity when working at both high and low rates, and at the same time in th...

AI Technical Summary

Problems solved by technology

However, because the bandwidth of the high-rate, high-bandwidth fan-out buffer is too wide relative to the low-rate signal, unnecessary high-frequency noise and crosstalk will be introduced, and the receiving sensitivity of the low-rate signal will be reduced; Optical transceiver modules are not widely used and expensive, which brings great difficulties to the cost control of optical transceiver modules

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