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http://dx.doi.org/10.3807/KJOP.2005.16.2.133

Voltage-Controlled Photonic RF True-Time Delay Using a Tapered Chirped Fiber Bragg Grating  

Chae, Ho-Dong (Department of Electronic Engineering, Kwangwoon University)
Lee, Sang-Shin (Department of Electronic Engineering, Kwangwoon University)
Publication Information
Korean Journal of Optics and Photonics / v.16, no.2, 2005 , pp. 133-137 More about this Journal
Abstract
A photonic RF true-time delay using a tapered chirped fiber Bragg grating coated with a heating electrode has been proposed and fabricated. For an RF signal carried over an optical signal, the time delay has been achieved by controlling the voltage applied to the electrode and thus adjusting its reflection positions from the fiber grating through the thermooptic effect. It features continuous voltage-controlled operation, requiring no mechanical perturbation and no moving parts. The measured time delay was about 120 ps with the electrical power consumption of $250{\cal}mW$.
Keywords
true-time delay; Phase shifter; Phase array antenna; RF; fiber Bragg grating;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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