100G QSFP28 Digital Coherent Optics (DCO) transceiver support 100G transmission over standard single-mode fiber (SMF) up to 80 km, with coherent detection of QAM modulated signals. The electrical interface specifically supports 100GE with SM - 100G - FEC application. On the optical side the optical specifications are aligned with IEEE standard 802.3bm 100GBASE-ZR(28) and ITU-T G.698.2 OWDM-IBA2(CF)/DW100-IBA2(CF) , which define a 2 95GBd dual-polarization differential QPSK modulation format.   The module is offered in both commercial temperature (0°C to 70°C) and industrial temperature (-40°C to 85°C) versions, with optional configuration to support flexible oscillator laser wavelength tunable and the transceiver power dissipation of less than 6.0W. The local "automatic" is full C-band.   The transceiver module is compliant to the Specification for QSFP+ 28 Gb/s 4X Pluggable Transceiver Solution (QSFP28)  and specifications referenced therein . The transceiver is RoHS compliant and lead-free per Directive 2011/65/EU.