6 March 2018
Oclaro announces availability of 100G PAM4 EML lasers to meet demand for 400G high-speed interconnects
© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.
Oclaro Inc of San Jose, CA, USA (which provides components, modules and subsystems for optical communications) has announced general market availability of its 100G PAM4 electro-absorption distributed feedback (EA-DFB) EML chips for next-generation transceiver applications.
The firm says that its EML chips operating at 53Gbaud with up to 40GHz bandwidth (@20°C) and 6dB extinction ratio (@70°C) are suitable for use in 4-level pulse amplitude modulation-based (PAM4) transceivers, enabling 100Gbps per wavelength. Combining high performance and low power consumption, the EML chips pave the way for the next wave of 200Gbps and 400Gbps in data-center networks.
Oclaro also announced additional wafer fab capacity upgrades for directly modulated laser (DML) and electro-absorption modulated laser (EML) production, providing greater availability for its components. The firm says that the newly installed production capacity will enable it to satisfy the increasing demand for cost-effective high-speed transceivers.
“With the explosive growth of large-scale data centers, the demand for these lasers has never been greater and, by increasing our manufacturing capacity, Oclaro can ensure its customers have the supply they need,” says chief strategy officer Yves LeMaitre.
Oclaro reckons that its high-speed 25G DML chips, which have been produced in high volume for the last two years, are well suited for 100Gbps CWDM4 transceivers. They can also be used in low-cost SFP28 modules and other 25Gbps products for high-volume, low-cost applications. The firm’s EML devices provide the high bandwidth and linearity needed for next-generation 200Gbps and 400Gbps transceivers using PAM4, while still maintaining small size and low cost.
Oclaro’s laser chips support both CWDM4 and LAN-WDM wavelength standards and, in many applications, uncooled operation and non-hermetic packaging can be employed for low-cost, high-performance module solutions, including PAM4 transceivers for higher data rates.
Oclaro’s 100Gbps PAM4 EML chips are ready for sampling now.