Fiber Optic Distribution Networks for Military Applications
Abstract
A number of military applications require ad-hoc wireless commumcation and networking systems that employ low phase noise reference signals for up- and down- conversion of communication signals and further processing of data signals. High performance fiber optic links are important for distribution of signals while phase noise degradation induced by AM-PM conversion in fiberoptic links impacts phase coherency of local oscillator (LO) signals in distributed systems. This paper focuses on issues associated with directly and externally modulated fiber optic links and their performance limitations in terms of gain, noise figure, nonlinearity, and dynamic range. The performance-cost aspects of both types of links are compared and it is pointed out that directly modulated links meet performance-cost requirements in most applications. Analysis of phase noise degradation of frequency reference is presented for directly modulated fiber optic distribution networks. SRS induced fiber nonlinearity is also discussed. Since the response of a Fabry-Perot laser diode can be altered by adding an external feedback, resulting in a resonance peak, results of a monolithically integrated FP laser are discussed. Finally, opto-electronic mixing of IF and LO signals are also demonstrated for the mode-locked case.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2003
- Accession Number
- ADP014037
Entities
People
- Afshin S. Daryoush
Organizations
- Drexel University