11 June 2018

Emcore announces test results of OBI-mitigated L-EML RFoG ONU transceiver

© Semiconductor Today Magazine / Juno PublishiPicture: Disco’s DAL7440 KABRA laser saw.

Emcore Corp of Alhambra, CA, USA – which provides indium phosphide (InP)-based optical chips, components, subsystems and systems for the broadband and specialty fiber-optics markets – has announced successful performance test results of its linear externally modulated laser (L-EML), radio frequency over glass (RFoG) optical networking unit (ONU) transceiver by Kyrio, a subsidiary of CableLabs. Emcore says Kyrio’s results showed that its L-EML-based ONUs are significantly better at reducing the occurrence of optical beat interference (OBI) in a passive optical network than traditional ONUs.

Kyrio’s results are based on a test of up to 32 distributed feedback (DFB) ONUs and 32 L-EML-based ONUs in a network with Kyrio-provided passive optical splitters and cable. Testing compared the OBI performance of the set of traditional DFB RFoG ONUs to Emcore’s new L-EML solution for RFoG upstream communication. OBI results in poor data performance of all ONUs, cable modems and consumer devices connected to the same optical splitter. The results examined the ability of Emcore L-EML-based ONUs to reduce the occurrence of OBI.

“Emcore’s L-EML RFoG ONU achieves OBI mitigation due to the inherent narrow spectral width of our laser technology, as well as through proprietary upstream laser wavelength management designed to significantly improve RFoG network performance in high-density customer environments,” says Gyo Shinozaki, Emcore’s VP of marketing. “Test results by Kyrio proved that our L-EML-based RFoG ONU reduced the effects of OBI compared to traditional ONUs.”

The L-EML RFoG ONU transceiver is designed to support standard CATV downstream and upstream transmission bands. Downstream it receives a 1550nm forward-path optical signal carrying an RF cable television spectrum up to 1.2GHz. For return path the L-EML transmitter operates at 1610nm and supports 5-42/65/85 or 204MHz spectrum options. The unit is compliant with the SCTE (Society of Cable Telecommunications Engineers) RF over Glass specification.

Emcore is showcasing its OBI-mitigated L-EML RFoG ONU transceiver, as well as its complete line of cable network solutions, in booth #Q60 (hall 8) at ANGACOM 2018 Exhibition & Congress for Broadband, Cable and Satellite at the Cologne Congress Center, Germany (12-14 June).

Tags: Emcore InP CATV

Visit: www.angacom.de

Visit: www.emcore.com