Novel breakthrough random-hole optical fibers (RHOFs) are fabricated in a draw tower facility, by tapering an optical fiber preform packed with a silica powder mixture capable of producing air holes in situ at the high temperature of tens of hundreds in degrees Celsius. Structural and propagation characteristics of the porous RHOF are explained briefly. Experimental investigations of the invented RHOF are performed for pressure sensor applications. Remarkable results are obtained for the RHOF with desirable pressure sensitivity independent of temperature, as is required for harsh conditions as in oil reservoirs.
© 2013 Optical Society of Korea
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.4000) Optical devices : Microstructure fabrication
(060.4005) Fiber optics and optical communications : Microstructured fibers
Original Manuscript: May 8, 2013
Revised Manuscript: June 27, 2013
Manuscript Accepted: July 17, 2013
Published: August 25, 2013
Jeong Kim, Dan Kominsky, and Gary Pickrell, "Discernibly Temperature-insensitive Pressure Sensitivity in Porous Random-Hole Optical Fibers," J. Opt. Soc. Korea 17, 300-304 (2013)
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