OIF approves IC-TROSA implementation agreement

The Optical Internetworking Forum (OIF) has approved the Integrated Coherent Transmitter-Receiver Optical Subassembly (IC-TROSA) Implementation Agreement (IA). IC-TROSA integration is being demonstrated during the OIF Physical and Link Layer (PLL) interoperability demo in booth 441 at the European Conference on Optical Communication (ECOC 2019) in Dublin, Ireland (23-25 September).

“The IC-TROSA project took an aggressive approach to coherent optical component integration and has delivered two new package designs incorporating TX and RX integration, common digital controls and performance monitoring all in a small-form-factor package,” says IC-TROSA IA technical editor Scott Grindstaff, director R&D at ADVA. “Additionally, package specific features such as fiber-free interface and solder reflow compatibility have been incorporated.”

The optical sub-assembly supports high-bandwidth and high-order dual-polarization quadrature amplitude modulation (QAM) operations and is suitable for data-center interconnect (DCI), metro and long-haul applications. As module sizes decrease, coherent optics components need similar size reductions to enable next-generation multi-terabit switches, line cards and transport platforms.

“The IC-TROSA IA is a solution for density requirements for line cards, front-pluggable and future on-board coherent 400G+ optical modules,” says Karl Gass, OIF PLL Working Group, Optical vice chair. “It aims to standardize a photonic package for coherent applications that is easy to use while leaving the internal implementation to the vendor.”

The IC-TROSA Type-1 is optimized for silicon photonics technology and uses a surface-mount package with a ball grid array (BGA) electrical interface. Advantages include an increased electrical bandwidth and solder reflow capability. The IC-TROSA Type-2 is optimized for indium phosphide (InP) technology and uses a gold-box package with flex-cable electrical interface. Advantages include an integrated tunable laser and a duplex LC optical connector.

The IC-TROSA’s low power dissipation and miniature footprint enables small-form-factor digital coherent optics (DCO) transceivers in a QSFP-DD or OSFP form factor, as well as very high-density coherent line-card or daughtercard designs. Devices can support multiple modulation formats, including QPSK, 8QAM, and 16QAM, at symbol rates up to 64Gbaud, enabling data transmission up to 600Gb/s.

See related items:

OIF showcasing 400ZR, CEI-112G and IC-TROSA interoperability demos at ECOC

Tags: OIF Optical communications

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