Patent ID: 7620327
Filing Date: 2009-11-17
Classification: H04B

Abstract:
1. 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 comprising: a transmitter for transmitting data over the first optical fiber, the transmitter having a laser, a modulator, and a controller receiving input data and controlling the modulator as a function of the input data, the transmitter transmitting optical signals for telecommunication as a function of the input data; 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 energy level detector optically connected between the receiver and the fiber input to measure an energy level of the optical signals, wherein the energy level detector includes a plurality of thresholds.