13 March 2018
Finisar launches smallest coherent optical assembly for high-density line-card and transceiver designs
© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.
In booth #3713 at the Optical Networking and Communication Conference & Exhibition (OFC 2018) in San Diego (13-15 March), fiber-optic communications component and subsystem maker Finisar Corp of Sunnyvale, CA, USA has launched what it claims the smallest fully integrated coherent optics assembly - the Integrated Tunable Transmitter and Receiver Assembly (ITTRA) product family - complementing its line of coherent components and ACO (analog coherent optics) transceivers. Designed for easy customer integration into coherent line cards or DCO (digital coherent optics) transceivers, the ITTRA enables users to accelerate their time to market and reduce program and development costs, it is claimed.
In a footprint that is 70% smaller than the size of a CFP2 module, the ITTRA provides the same functionality as a CFP2-ACO. All key building blocks of an ACO interface (tunable laser, optical amplifier, modulators, drivers, coherent mixer, photodiode array, and TIAs) are incorporated in a single optical sub-assembly, which is combined with a miniature controller board that provides a standardized management interface. Since the ITTRA is a fully calibrated and tested assembly instead of a disaggregate set of components, it is reckoned to yield operational cost savings for the line-card or module integrator because test times of the end product are greatly reduced.
“A turn-key solution like the ITTRA greatly reduces the development effort for the line-card or module integrator, allowing them to rapidly respond to new market opportunities,” says John DeMott, senior director of marketing.
The demonstration at OFC shows the 32Gbaud ITTRA transmitting and receiving data at 200Gb/s using DP-16QAM modulation. The product will be sampling in second-quarter 2018.
In addition, Finisar is demonstrating the WaveShaper A Series of programmable optical processors with the newly released WaveShaper App revision 1.3. This software supports arbitrary power splitting on up to 16 ports with ratios of up to 100 to 1. Finisar is also providing a technology demonstration of a WaveShaper processor covering the extended C+L band with a total wavelength range larger than 100nm. Arbitrary filtering of attenuation and phase is supported across the entire range.