A 155M SFP is an optical SFP module designed to transmit data at a fixed rate of 155Mbps, primarily used in SDH STM-1 and SONET OC-3 networks. The optical performance provides a bridgeable distance of up to 15km. The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA) and MCU control unit. All. This is a standard SFP optical module. This product need to use in pair and match up with fiber converter and optical Ethernet switch with SFP port, it can be used in Ethernet, telecom and. Currently, there are five commonly used rates: 155Mbps, 1. 25G optical modules are also called GE (Gigabit) optical modules, which are. Is a 155m optical module a hundred-megabit or a Gigabit? The rate of a 155M optical module is neither strictly "hundreds of megabits" (100Mbps) nor "gigabits" (1000Mbps), but a specific rate level—155. 52Mbps, mainly derived from the STM-1 (Synchronous Transport Module level 1) rate in the SDH.
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