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Emcore successfully tests L-EML RFoG Transceiver

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Testing by Kyrio shows that new Optical Networking Unit (ONU) transceiver are significantly better at reducing OBI (Optical Beat Interference) than traditional ONUs

Emcore Corporation 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. Kyrio's results showed that Emcore's 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. The 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 from this testing examined the ability of Emcore L-EML-based ONUs to reduce the occurrence of OBI to provide a better customer experience.

"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," said Gyo Shinozaki, VP of marketing at Emcore. "We are extremely pleased that test results by Kyrio proved that our L-EML-based RFoG ONU reduced the effects of OBI compared to traditional ONUs," added Shinozaki.

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

Emcore will show its OBI mitigated L-EML RFoG ONU transceiver and the company's complete line of cable network solutions at ANGACOM 2018, June 12-14 at the Cologne Congress Centre, Cologne, Germany.

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