Shenzhen Zkosemi Semiconductor Technology Co., LTD.
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Cisco Compatible GPON-OLT-C++ SFP 1310nm TX/1490nm RX 2.488G/1.244G 20km DDM SC SMF Transceiver Module
Features
Applications
Gigabit-capable Passive Optical Networks (GPON) 20Km 29~41dB attenuation range.
Description
The GPON OLT Transceiver module is designed for Gigabit Ethernet Passive Optical Network(GPON)20km transmission. The module incorporates 1490nm continuous-mode transmitter and 1310nm burst-mode receiver. The transmitter section uses a 1490nm DFB laser and an integrated laser driver which is designed to be class-1 eye safe under any single fault. The laser driver includes APC and temperature compensation functions, which are used for keeping the launch optical power and extinction ratio constant over temperature and aging.
The receiver section uses an integrated APD and BM-preamplifier mounted together. The burst-mode receiver is restless and wide dynamic range is 29~41dB that can be obtained under whole operating conditions. The module has the function that indicates receiver burst-power-detect signal. The receiver includes digitalized burst mode optical power monitoring function, which converses any of a received ONU optical power directly in digital, with a Trigger input from system. When rising edge of Trigger detected, the DDM processor starts a burst optical power conversion, the digital result is available via DDM interface after Burst Optical Power Conversion Time. Trigger pulse width should be more than Burst Optical Power Conversion Holding Time. An integrated WDM coupler can distinguish 1310nm input light from 1490nm output light. The metallic package guarantees excellent EMI and EMC characteristics.