Gigabites: XGS-PON Gets Its Day in the Sun
Welcome to Gigabites. In today's edition, vendors test the XGS-PON waters in France, Google Fiber hails microtrenching, AT&T announces new gigabit market launches and more.
The hosting of the test event is significant because it shows the growing traction of XGS-PON in a gigabit world that might otherwise be focused solely on a direct upgrade from GPON to the still-expensive NG-PON2 standard. While NG-PON2 promises symmetrical speeds up to 40 gigabits per second, XGS-PON is proving an attractive interim step in the upgrade process with its delivery of symmetrical speeds up to 10 Gbit/s. Among the vendor companies attending the plugfest were Huawei Technologies Co. Ltd. , Nokia Corp. (NYSE: NOK), ZTE Corp. (Shenzhen: 000063; Hong Kong: 0763), Adtran Inc. (Nasdaq: ADTN), Broadcom Corp. (Nasdaq: BRCM) and Calix Inc. (NYSE: CALX).
Adtran has been one of the more outspoken proponents of XGS-PON over the last year. The company has noted the technology makes it possible to adopt a pay-as-you-grow model for broadband. Operators can start with XGS-PON and then switch out optics as needed to make the complete jump to NG-PON2. Adtran has also announced some early trials of XGS-PON, including a deployment with Jackson Energy Authority in Tennessee. (See Adtran Launches 10-Gig Trials.)
While XGS-PON is moving forward, not everyone in the industry is sanguine about the stepping-stone technology. Some argue for a faster move to NG-PON2 with its tunable optics and ability to support diverse services that can be managed dynamically across multiple wavelengths. (See Calix Eases Transition to NG-PON2.)
— Mari Silbey, Senior Editor, Cable/Video, Light Reading