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Senegalese coherent optical module 40G
FTL4C1QE2C QSFP+ transceiver modules are designed for use in 40 Gigabit Ethernet links over single mode fiber. They are compliant with the QSFP+ MSA1,2 and IEEE 802. These FTL4C1Q modules feature power dissipation of <3. 3V power supply, and an uncooled 4x10Gb/s CWDM transmitter. GIGALIGHT provides 100G, 200G, and 400G pluggable digital coherent optical transceiver modules (DCO) for data center interconnection (DCI), 5G backhaul, metro telecommunication, and other long-haul transmission networks.
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The meaning of coherence in coherent optical modules
In optics, coherence means a light wave keeps a steady phase relationship at different spots or times. If a source is only partly coherent, you'll see reduced or fluctuating visibility in the patterns. Partially coherent sources are sources where the coherence time or coherence length are limited by bandwidth, by thermal noise, or by other effect. Know the definition of fringe contrast.