RFoG

Product Overview

Radio Frequency over Glass (RFoG) technology is designed as a universal fiber-to-the-premises solution for HFC (Hybrid Fiber Coax) network operators. RFoG supports incremental migration to fiber optic access and allows cable operators to align network expense with revenue potential, acceleration ROI. The RFoG solution provides the benefits of a PON, including elimination of expensive powered components in the outside plant. RFoG can be deployed in a standalone configuration, or with either EPON or GPON technology.

Hitachi's Node+Zero RFoG solution follows the specifications of the emerging RFOG (RF over Glass) initiative, allowing CATV operators to leverage existing head end and CPE equipment and ultimately to incrementally migrate to PON as market conditions warrant. The solution supports targeted bandwidth increases along with opportunities for immediate revenue from subscribers in the target locations.

Deployment Scenarios

Node+Zero modules can be deployed in HFC networks in multiple scenarios, including a standalone RFOG solution, with a PON system, or standalone with future migration to PON. Models are designed for deployment as follows:

• Node+Zero H-112: deploy in a standalone configuration, with PON, or for future migration to PON. The addition of the PON system provides full PON bandwidth capability -up to 1 Gbps to an individual subscriber. RF services (DOCSIS, RF Forward and Return) are passed to the subscriber CPE via the Node+Zero module. The PON ONT supports enhanced bandwidth for higher data rates and IP video services, and voice services.
• Node+Zero H-110: deploy in a standalone configuration. The device passes RF services (DOCSIS, RF Forward and Return) bi-directionally and transparently between the head end and the subscriber. Like all Node+Zero models, Model H-110 conforms to PON fiber plant layout and wavelengths. However, it provides a single return path wavelength, so it does not contain the second multiplexed return path wavelength that carries PON data in the other two models.
• Node+Zero H-103: designed to be deployed with a PON ONT that has a 1550nm receiver for the downstream RF services. In combination with a PON system, this configuration provides full PON bandwidth capability -up to 1 Gbps to an individual subscriber. RF services (DOCSIS, RF Forward and Return) are passed to the subscriber CPE via the PON ONT, which supports enhanced bandwidth for higher data rates and IP video services, as well as voice services.

• page top