Fiber optic telecommunications card with energy level monitoring

摘要

A transceiver card for a telecommunications box for transmitting data over a first optical fiber and receiving data over a second optical fiber. The card has transmitter for transmitting data over the first optical fiber, the transmitter having a laser and a modulator, a fiber output optically connected to the laser for connecting the first optical fiber to the card, a fiber input for connecting the second optical fiber to the card, a receiver optically connected to the fiber input for receiving data from the second optical fiber, and an OTDR optically connected between the transmitter and the fiber output or between the receiver and the fiber input. An energy level detector is also provided between the receiver and the fiber input.

主权项

1. A telecommunications monitoring method, comprising:
receiving an incoming optical signal at a downstream termination point, located within an optical multiplexor box, of an optical fiber; splitting, within the optical multiplexor box, the incoming optical signal into a data optical signal and a test optical signal; tapping the data optical signal to produce a tapped optical signal; processing, within the optical multiplexor box, the data optical signal to produce a data electrical signal indicative of data encoded in the incoming optical signal; processing the tapped optical signal to produce an electrical signal indicative of a power of the data optical signal; and performing, by an optical time-domain reflectometer (OTDR) module within the optical multiplexor box, OTDR monitoring of an optical fiber selected from: an incoming optical fiber associated with the incoming optical signal and an outgoing optical fiber associated with an outgoing optical signal.