Mixer-based in-service time domain reflectometer apparatus...

Details Mixer-based in-service time domain reflectometer apparatus... Mixer-based in-service time domain reflectometer apparatus...

2006-04-18

2006-04-18

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07030975

ABSTRACT:
Apparatus and methods for improved fiber optic signal transmission systems are disclosed. In one embodiment, a reflectometer includes an optical source to emit optical energy into a the fiber optic line and to generate time-delayed signals from the repetitive pulses, an optical receiver to detect reflected energy from the fiber optic line and generate reflected signals from the reflected energy, a mixer that receives the reflected signals and receives the time delayed signals to generate a product waveform from the reflected signals and the time-delayed signals, and a processor that receives the product waveform to process the waveform to generate a value based on the sampled characteristic.

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