Oclaro, Inc. (NASDAQ: OCLR) has introduced new photonic integrated coherent transmitters (ICTs) and intradyne coherent receivers (ICRs) for 400G and 600G applications. The components can be configured for multiple data rates, broadening the range of network applications customers can cover, from data center interconnects (DCIs) to ultra-long-haul transmission. The optical components and subsystems company unveiled these new products at last week's ECOC Exhibition.
The 64-Gbaud ICT combines an ultra-narrow line width laser with a high-bandwidth dual QPSK Mach Zehnder modulator to support flexible baud rates up to 64 Gbaud and 64-QAM modulation, enabling transmission from 100G to 600G. External optical components are no longer necessary, assembly is simplified, and operation in colorless networks is enabled with the built-in semiconductor optical amplifiers (SOAs), a tunable filter, and a variable optical attenuator (VOA), Oclaro asserts. The ICT improves receiver performance by providing a local oscillator (LO) feed with +12-dBm output power.
The 64-Gbaud ICR is a fully integrated coherent receiver, supporting data rates from 100G to 600G. The receiver can operate at rates up to 64 Gbaud with modulation schemes such as 64-QAM. It has an integrated monitor photodiode (MPD) and VOA for single-channel and multichannel applications support in colorless networks, and is compliant with specifications in the OIF Implementation Agreement, OIF-DPC-MRX-01.0 form factor.
Oclaro says that its 64-Gbaud ICR almost doubles bandwidth without responsivity changes relative to 32-Gbaud parts; the 64-Gbaud ICT-ICR pair thus meets link budgets in existing networks while doubling capacity. The 64-Gbaud ICT and ICR pair are suitable for the stringent size requirements on next-generation 1.2-Tbps SLEDs due to their compact form factors and integrated functionality, the company adds.
The company expects to sample its 64-Gbaud ICR and ICT products in the fourth quarter of 2017.
Meanwhile, Oclaro says its 43-Gbaud ICT and ICR have been globally deployed in high volume for applications up to 250G per wavelength and are now available for use in compact form factors such as CFP-DCO and CFP2-ACO. The 43-Gbaud ICR/ICT combination eliminates the need for erbium-doped fiber amplifiers (EDFAs), VOAs, or splitters, and other external optical components, the company said.
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