ITTC Project

High Speed WDM Sub-Carrier Multiplexed Optical Fiber Communication Systems

Project Award Date: 07-01-1998


The rapid development of information technology is constantly increasing the demand for transmission capacity and broadband services in optical fiber networks. Future optical networks, including long-haul backbone transmission networks and short-haul interconnections, will require both high capacity and flexibility.

This projects objective is to investigate high-bit-rate, flexible, fiber-optic communication systems based on the combination of sub-carrier multiplexing (SCM) technique and wavelength division multiplexing (WDM) technology. The use of advanced optical modulation schemes, such as single side-band (SSB) modulation, in the system design may greatly enhance the system capacity through better utilization of the optical bandwidth. This research will involve system analysis and the assessment of microwave SCM within optical WDM systems, both experimentally and theoretically. In addition, research will extend into the area of hybrid SCM-WDM systems to increase flexibility and capacity.

Hybrid SCM-WDM optical fiber networks are currently being considered by telecom and cable TV industries as a promising technology for simultaneous delivery of both analog and digital services. In the last decade, analog SCM optical systems have been studied extensively. However, high-bit-rate digital SCM has not been fully examined. So the potential advantages and limitations of high-bit-rate, digital SCM within WDM frameworks should and will be investigated.

Through system assessment and performance evaluation, this project will investigate high-bit-rate, flexible fiber-optic communication systems based on the combination of SCM technique and WDM technology. Included in this assessment are several issues such as channel allocations, the impact of fiber dispersion, noise, and inter-channel crosstalk.


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

Student Investigator(s): Sen Zhang, Biao Fu

Project Sponsors

Primary Sponsor(s): Sprint Corporation

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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