20020163454-A1 is referenced by 1 patents.

A photonically sampled analog-to-digital converter using parallel channels of sampling and quantizing. The parallel combination achieves cancellation of the spurs that result from the nonlinear transfer function of the samplers. The samplers feed a dual-detector optoelectronic receiver that has differential inputs for suppression of laser intensity noise. The outputs of the multiple photonic samplers are averaged to reduce the effects of shot or thermal noise from the optoelectronic receiver of a sampler. The errors produced by the quantization process can be reduced by using a delta-sigma modulator-based analog-to-digital convertor as the quantizer which provides noise-spectrum shaping and filtering.

Title
Photonic parallel analog-to-digital converter
Application Number
9/848499
Publication Number
20020163454
Application Date
May 3, 2001
Publication Date
November 7, 2002
Inventor
Robert H Walden
Newbury Park
CA, US
Daniel Yap
Thousand Oaks
CA, US
Agent
c o LADAS & PARRY
CA, US
Agent
Ross A Schmitt Esq
CA, US
Assignee
HRL Laboratories
IPC
H03M 01/10
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