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Reconfigurable liquid metal fiber-optic mirror for continuous, widely-tunable true-time-delay |
Optics Express, Vol. 21, Issue 3, pp. 2741-2747 (2013)
http://dx.doi.org/10.1364/OE.21.002741
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Abstract
This paper reports the demonstration of a widely-translatable fiber-optic mirror based on the motion of liquid metal through the hollow core of a photonic bandgap fiber. By moving a liquid metal mirror within the hollow core of an optical fiber, large, continuous changes in optical path length are achieved in a comparatively small package. A fiber-optic device is demonstrated which provided a continuously-variable optical path length of over 3.6 meters, without the use of free-space optics or resonant optical techniques (i.e. slow light). This change in path length corresponds to a continuously-variable true-time delay of over 12 ns, or 120 periods at a modulation frequency of 10 GHz. Wavelength dependence was shown to be negligible across the C and L bands.
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OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications
(060.4005) Fiber optics and optical communications : Microstructured fibers
(250.4745) Optoelectronics : Optical processing devices
(060.5625) Fiber optics and optical communications : Radio frequency photonics
ToC Category:
Fiber Optics and Optical Communications
History
Original Manuscript: October 5, 2012
Revised Manuscript: January 11, 2013
Manuscript Accepted: January 11, 2013
Published: January 29, 2013
Citation
Ross T. Schermer, Carl A. Villarruel, Frank Bucholtz, and Colin V. McLaughlin, "Reconfigurable liquid metal fiber-optic mirror for continuous, widely-tunable true-time-delay," Opt. Express 21, 2741-2747 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-3-2741
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