Analysis of Tunable Delay-Line Using an Optical Single-Sideband Modulator

Tetsuya KAWANISHI  Masayuki IZUTSU  

IEICE TRANSACTIONS on Electronics   Vol.E86-C   No.7   pp.1230-1235
Publication Date: 2003/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Issue on Recent Progress in Microwave and Millimeter-wave Photonics Technologies)
Category: Signal Generation and Processing Based on MWP Techniques
delay-line,  optical modulation,  single-sideband,  

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We investigated a tunable delay-line using an optical single-sideband modulator and an optical fiber loop. The single-sideband modulator consists of four optical modulators and an RF electric signal source. The fiber loop has a fiber Bragg grating and a couple of optical circulators. The number of times light circulates in the loop depends on the frequency of the rf-signal fed to the modulators. By using numerical simulations, we discussed the deformation of the waveform in the delay-line due to the fiber Bragg gratings, the modulators and the optical amplifiers put in the loop.