Apparatus and method for testing fibers in a PON

摘要

A manner of providing for testing of access fibers in a PON (passive optical network) using OTDR (optical time-domain reflectometry). According to the invention, a PON includes an optical splitter module having one or more optical couplers that combines downstream light from 1×N optical splitter directing the output of an OLT (optical line terminal) and a cyclic AWG (arrayed waveguide grating) for transmission toward one or more ONUs (optical network units). The splitter module is preferably formed on a single semiconductor chip, such as a PIC (photonic integrated circuit) chip and may reside in an outside plant of the PON.

主权项

1. A splitter module for a PON (passive optical network), comprising:
an optical splitter; an OTDR transmitter comprising a light source a cyclic AWG (arrayed waveguide grating); and at least one WDM coupler for optically coupling an optical splitter communication link and a cyclic AWG communication link, wherein the at least one WDM coupler is situated downstream of both the optical splitter and the cyclic AWG.