What is it about?
Piezo optical-fiber stretchers and temperature-controlled fiber spools are usually used for a conventional time-delay lines. We present a novel approach using a copper-coated fiber. A copper-coated fiber preserves the performance of a standard single-mode optical fiber, while at the same time acting as an electrical wire, which can be effectively heated by applying an electrical current.
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Why is it important?
As a result of the significant temperature change, the signal (group) delay can be properly adjusted and controlled. Compared to piezo optical-fiber stretchers and temperature-controlled fiber spools, much shorter lengths of fiber are required and a faster response time can be achieved.
Perspectives
Optical time-delay line can be achieved by copper-coated fiber. Applications are in radar, microwave phonics, synchronisation systems, beam steering antenna and timing systems.
dr. Bostjan Batagelj
University of Ljubljana
Read the Original
This page is a summary of: Use of copper-coated fiber as a tunable optical time-delay line in precise timing systems, Optical and Quantum Electronics, July 2013, Springer Science + Business Media,
DOI: 10.1007/s11082-013-9743-8.
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