ITTC Project


Low Coherent, High Resolution WDM Reflectometry for Fiber Length Measurement

Project Award Date: 12-01-2000



Description

This project aims to test a method that measures the path length in an optical fiber accurately and dynamically. This method combines the traditional low-coherent reflectometry implementation with modern wavelength-division multiplexing (WDM) technology. This is accomplished through a string of optical fiber gratings; each fiber grating reflects a specific wavelength band. This string of fiber gratings will act as a wavelength-dependent optical delay line, and perform wavelength-domain-to-time-domain conversion of the optical signal. This technique is superior to the existing measurement methods in that it provides sub-millimeter spatial resolution and 1m dynamic range.

The focus of this project is on the measurement of earth Crustal deformation. This will be accomplished by burying the fiber under ground and measuring the length variation of the fiber. Since Crustal deformation causes the surface of the Earth to change constantly, this deformation can be seen as the sole reason for earthquakes and volcanoes. Using the proposed fiber-optic WDM optical low-coherent reflectometer, the Crustal deformation may be accurately monitored; it will be measured and active faults in the Manhattan, Kansas area will be identified.

Expectations of this project include the development and optimization of methods for data acquisition and processing. The successful completion of this project is predicted to provide the geophysical community with an unprecedented tool for the study of many theoretical and practical problems.


Investigators

Faculty Investigator(s): Rongqing Hui (PI), Christopher Allen

Student Investigator(s): Biao Fu


Project Sponsors


Primary Sponsor(s): NSF/KTEC


Partner with ITTC

The Information and Telecommunication Technology Center at the University of Kansas has developed several assistance policies that enhance interactions between the Center and local, Kansas, or national companies. 

ITTC assistance includes initial free consulting (normally one to five hours). If additional support is needed, ITTC will offer one of the following approaches: 

Sponsored Research Agreement

Individuals and organizations can enter into agreements with KUCR/ITTC and provide funds for sponsored research to be performed at ITTC with the assistance of faculty, staff and students.

Licensing and Royalty/Equity Agreement

An ITTC goal is the development of investment-grade technologies for transfer to, and marketing by, local, Kansas, and national businesses. To enhance this process, the Center has developed flexible policies that allow for licensing, royalty, and equity arrangements to meet both the needs of ITTC and the company.

Commercialization Development

Companies with a technology need that can be satisfied with ITTC's resources can look to us for assistance. We can develop a relationship with interested partners that will provide for the development of a technology suited for commercialization.

ITTC Resource Access

ITTC resources, including computers and software systems, may be made available to Kansas companies in accordance with the Center's mission and applicable Regents and University policies.

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