Optical Pulse Measurement with Nonlinear Optical Crystals

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For ultra-high speed optical networks, generating high repetition rate pulse trains is difficult. Current technology provides integrated optical structures that are used to split one pulse into many, but with a large inherent loss that increases with splitting ratio. Therefore, improved methods for generating high repetition rate pulse sequences with a low inherent loss are needed.

Purdue University researchers have developed a novel system for generating ultra-high speed pulse sequences from a single, low repetition rate, short pulse laser. This system increases measurement sensitivity and reduces the optical power requirements while retaining sufficient optical bandwidth to avoid measurement distortion.

Advantages:
-Provides the ability to obtain very large pulse split ratios with very low loss
-Avoids synchronizing different short pulse sources
-Only a single short source pulse laser required
-500-fold increase in sensitivity
-Provides large optical bandwidth with unparalleled sensitivity

Potential Applications:
-High-speed lightwave test instrumentation
-Optical performance monitoring instrumentation
Jun 30, 2005
Utility Patent
United States
7,570,851
Aug 4, 2009

Jul 21, 2004
Provisional-Patent
United States
(None)
(None)
Purdue Office of Technology Commercialization
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Email: otcip@prf.org