Title :
Design of a variable S-band fiber-optic delay line
Author_Institution :
Dept. of Electr. Eng., Alabama Univ., Tuscaloosa, AL, USA
Abstract :
This paper describes the design of a variable S-band delay line based on fiber-optic technology. A combination of a switched-RF configuration and switched-fiber configuration has resulted in improved performance with reduced costs compared to previously reported delay line systems. The reported delay line provides variable delays programmable from 0 nsecs to 9.55 μsecs in 50 nsec increments and may be switched as quickly as 600 nsecs. The delay line achieved a worst case output noise floor <-55 dBm/MHz, an output SNR>60 dB/MHz with the input signal at the 1 dB compression level of 6.6 dBm, a gain linearity <±2 dB, a power dissipation <43 watts, and an infinite capture time
Keywords :
microwave devices; optical communication equipment; optical delay lines; 0 ns to 9.55 mus; 43 W; 600 ns; costs reduction; delay line systems; fiber optic technology; gain linearity; infinite capture time; input signal; performance; power dissipation; programmable variable delays; switched RF configuration; switched fiber configuration; variable S-band fiber optic delay line; worst case output noise floor; Chirp modulation; Costs; Delay lines; Distributed feedback devices; Linearity; Optical fiber communication; Optical fibers; Optical modulation; Optical receivers; Optical transmitters;
Conference_Titel :
Southeastcon '96. Bringing Together Education, Science and Technology., Proceedings of the IEEE
Conference_Location :
Tampa, FL
Print_ISBN :
0-7803-3088-9
DOI :
10.1109/SECON.1996.510052
