NeoPhotonics Announces Shipment of 53 Gbaud Linear Driver ICs for Silicon Photonics Based Modulators for 400G Data Center Applications
Silicon Photonics (SiPho) has emerged as a promising technology for optical data transmission over intermediate reaches of approximately 500 meters (DR) inside datacenters. Several vendors have designed 53 Gbaud SiPho modulator chips which can modulate four separate optical signals using PAM4 encoding to achieve 100Gbps (billion bits per second) on four separate channels, resulting in a total of 400Gbps for the module. These SiPho modulator chip designs generally require a larger voltage swing than is normally produced by the CMOS electronics used in the PAM4 DSP chip. NeoPhotonics Linear Driver IC amplifies the electrical signal so that it is of an appropriate voltage to operate the SiPho modulator and produce the desired optical signal. NeoPhotonics Quad Driver chip combines four separate drivers in a single compact, low power chip designed to support compact pluggable modules such as OSFP and QSFP-DD.
These SiPho based transceivers also need a high power laser to provide the initial input light to the modulator.
"We are pleased to announce the initial shipments and availability of our 53 Gbaud GaAs Driver ICs just before the Fiber Optic Expo in
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