System and method for remoting a photonic analog-to-digital...

Details System and method for remoting a photonic analog-to-digital... System and method for remoting a photonic analog-to-digital...

2011-01-11

2011-01-11

Nguyen, Khai M (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Using optical device,

C341S159000

Reexamination Certificate

active

07868799

ABSTRACT:
The present invention is a remote input analog-to-digital conversion (ADC) system. The system may generate low jitter, short duration optical pulses to allow for high performance sampling of an antenna signal at a remote end of the system. The system may utilize phase modulation and IQ demodulation (with a reference optical pulse stream) using separate analog-to-digital converters for I and Q to overcome linearity limitations. Low sampling rate analog-to-digital converters may be utilized by the system by using parallel, low optical pulse repetition rate paths and/or optical demultiplexer switching trees. The system is an optical fiber system.

REFERENCES:
patent: 6118396 (2000-09-01), Song
patent: 6459522 (2002-10-01), Yariv
patent: 6525682 (2003-02-01), Yap et al.
Clark, Thomas R., et al., “Coherent Optical Phase-Modulation Link”, IEEE Photonics Technology Letters, vol. 19, No. 16; Aug. 15, 2007; pp. 1206-1208.

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