18 September 2017
NeoPhotonics highlights CW lasers for short-reach silicon photonics transceiver modules and EMLs with integrated drivers for long-reach PAM4 transceivers
In stand 340 at the European Conference on Optical Communications (ECOC 2017) in Gothenburg, Sweden (18-20 September), NeoPhotonics Corp of San Jose, CA, USA (a vertically integrated designer and manufacturer of hybrid photonic integrated optoelectronic modules and subsystems for high-speed communications networks) is highlighting its laser components for 100-400Gbps applications for the data center, including CWDM4, CLR4, PSM-4 and PAM4.
First, NeoPhotonics offers high-power 1310nm lasers and laser arrays qualified for use with low-cost, non-hermetic packages for 100G silicon photonics based QSFP28 modules. For longer reaches, it offers low-power-consumption 28GBaud externally modulated lasers (EML) with an integrated driver, designed for 4x25 NRZ 100G, 4x50 PAM4 200G, and 8x50 PAM4 400G data-center applications. The firm also offers a 56Gbaud EML with an integrated driver designed for use in 4x100 PAM4 configurations for 400G data-center applications.
Silicon photonics-based transceivers require custom, high-power, non-hermetic laser sources to provide the light source. NeoPhotonics has developed (and qualified to the Telcordia GR-468-CORE Issue 2 standard0 a line of high-power, uncooled lasers and laser arrays. Each laser provides an efficient and high-power light source designed around a specific implementation of silicon-based high-speed analog and digital electronic devices and related photonic components. The high-power 1310nm CW distributed feedback (DFB) lasers are qualified to the non-hermetic test compliance with Telcordia GR-468-CORE Issue 2 (including damp heat testing for powered non-hermetic devices) and are production ready.
For longer reaches, NeoPhotonics’ new 28GBaud EML integrates a driver, which utilizes the firm’s low-power linear gallium arsnide (GaAs) amplifier technology, with the firm’s 28GBaud EML at the chip-on-carrier (CoC) level. The CoC assembly fits into a four-channel transmitter optical sub-assembly (Quad TOSA) designed for 100Gbps QSFP28 and CFP4 form factors, eliminating the need for a separate driver on the board. In PAM4 applications, the integrated linear driver makes NeoPhotonics’ new CMOS-drivable 28GBaud EML an option for 200Gbps and 400Gbps applications due to the simple and direct connection to the PAM4/CDR IC. The firm’s 56Gbaud EML with integrated driver is similarly applicable in PAM4 single-wavelength 100G for four-wavelength 400G applications.
“Our laser components are key elements for optical modules used inside the data center suppling the light for short-reach silicon photonics-based 100G transceivers and the modulated light for longer-reach PAM4-based 100G and 400G transceivers,” says chairman & CEO Tim Jenks. “While the laser architectures are different, both are designed by us, manufactured in our internal fabs and utilize our hybrid photonic integration technology for high performance and high reliability,” he adds.
In addition, as part of the ECOC Market Focus Program, Dr Winston Way, NeoPhotonics’ chief technology officer, Systems, is presenting a paper ‘Applications of 64 Gbaud Optical Components and Modules’ on 20 September (13:50-14:20) at the Market Focus Theatre in the Exhibition Hall.
At ECOC, NeoPhotonics is exhibiting its suite of standard- and small-form-factor PIC-based components, including a full suite of 64Gbaund coherent devices for 100G to 600G coherent line-side applications, along with its 100G client-side and data-center CFP2-LR4 transceivers, as well as its multi-cast switches for ‘contentionless’ ROADMs (reconfigurable optical add/drop multiplexers).