Oclaro sampling 400G, 600G InP 64 GBaud optical components
March 1, 2018
Lightwave Staff
 Oclaro, Inc. (NASDAQ: OCLR) says it has begun sampling a range of 64-GBaud optical components suitable for applications that require 400- or 600-Gbps optical transmission. The portfolio includes a 64-GBaud micro-intradyne coherent receiver (micro-ICR), a 64-GBaud integrated coherent transmitter (ICT), a 64-GBaud high-bandwidth co-packaged driver modulator (HB-CDM), as well as a high-bandwidth LiNbO3 polarization-multiplexed quadrature Mach-Zehnder (PM-QMZ) modulator and a 100-kHz micro-integrated tunable laser assembly (micro-ITLA).
The company sees the devices as suitable to support a wide range of fiber-optic network applications, including long-haul, regional, metro, and data center interconnect. Oclaro expects the optical components to reach volume production by the end of this year; the LiNbO3 PM-QMZ modulator has already achieved this milestone. The company introduced the products last September in conjunction with ECOC 2017 (see " Oclaro introduces photonic ICTs and ICRs for 400G and 600G applications").
Details of the components include:
- The micro-ITLA complies with the OIF micro-ITLA Implementation Agreement. Oclaro says use of the company's thermally tuned DS-DBR laser technology enables a significant reduction in low frequency phase noise and linewidth while increasing optical output power to above +17 dBm.
- The HB-CDM complies with the OIF HB-CDM Implementation Agreement. It combines a high-bandwidth InP PM-QMZ modulator chip with a co-packaged matched RF driver. Semiconductor optical amplifiers (SOAs) integrated within the InP modulator chip enable flexible optical power and high linearity, Oclaro says.
- The 64-GBaud+ ICT combines a narrow line-width laser with a PM-QMZ Mach Zehnder modulator to support multiple baud rates up to 64-GBaud and 64-QAM modulation. The device thus supports transmission from 100 to 600 Gbps. Built-in SOAs, a tunable filter, and a polarization multiplexer eliminate the need for external optical components, simplify assembly, and enable operation in colorless networks, Oclaro says. The ICT provides a local oscillator output with +12-dBm EOL power for a mated coherent receiver.
- The 64-Gbaud+ ICR supports data rates from 100 to 600G and beyond, says Oclaro. It supports baud rates up to 64-GBaud with modulation schemes such as 64-QAM. The 64-GBaud ICR has an integrated monitor photodiode and variable optical attenuator to support single-channel and multichannel applications in colorless networks. It is compliant with the form factor specified in the OIF Implementation Agreement OIF-DPC-MRX-01.0
- Oclaro says the 64-GBaud ICR offers almost twice the bandwidth of 32-Gbaud parts without a change in responsivity. The 64-GBaud ICT-ICR pair thus can maximize link budgets in both existing and greenfield networks while doubling the capacity per channel, the company asserts. The ICT-ICR are packaged in a way that makes them suitable for the stringent size requirements on next-generation high-density 600G platforms, Oclaro adds.
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