Fiber communication systems and methods
AssigneeCable Television Laboratories, Inc.
InventorsZhensheng Jia, Luis Alberto Campos, Curtis Dean Knittle
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Abstract
An injection locked transmitter for an optical communication network includes a primary seed laser source input substantially confined to a single longitudinal mode, an input data stream, and a laser injected modulator including at least one secondary laser having a resonator frequency that is injection locked to a frequency of the single longitudinal mode of the primary seed laser source. The laser injected modulator is configured to receive the primary seed laser source input and the input data stream, and output a laser modulated data stream.
Claims20
A transceiver for an optical communication network, comprising:
- an input portion configured to receive an input laser signal from a remote primary laser source of the optical communication network, the input laser signal including a coherent tone pair having (i) a first coherent tone containing a downstream modulated signal, and (ii) a second coherent tone containing a downstream unmodulated signal;
- and
- a laser injected modulator including a first secondary laser injection locked to a primary frequency of a single longitudinal mode of the remote primary laser source,
- wherein a frequency of the second coherent tone is held constant to a frequency of the first coherent tone, and
- wherein the laser injected modulator is configured to receive the downstream unmodulated signal on the second coherent tone, and output an upstream modulated laser signal.
Dependencies are inferred from the claim text.