Development of Hard Plastic Clad Fiber (HPCF)-Compatible Devices and Demonstration of HPCF-PON

Kim, J.K.; Kim, D.U.; Kim, T.-Y.; Park, C.-S.; Lee, Byeong Ha; Oh, Kyunghwan

doi:10.1109/lpt.2007.897288

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2013

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“…Tapering or polishing a fiber is one of the important ways to modify the original fiber's structures toward some unusual functions. These attempts include the plastic-clad silica fibers with partly removed cladding [1], side-polished fibers [2]- [4], tapered single-mode fibers [5], tip-polished fibers [6], [7], and D-shaped fibers [8]. Among all of them, the D-shaped fiber presents a unique platform owing to its flat side surface, which is quite convenient in fabricating various surface structures.…”

Section: Introductionmentioning

confidence: 99%

Metallic Grating on a D-Shaped Fiber for Refractive Index Sensing

et al. 2013

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Metallic grating (MG) with high accuracy is fabricated on the side surface of a D-shaped fiber by using focused ion beam (FIB) machining. The D-shaped fiber is obtained through polishing the cladding of a single-mode fiber away from one side. Then, a thin-film layer of gold is deposited on the flat side surface. A 38-m-long grating with the pitch of 485 nm is further milled on the gold film. The guiding mode and the surface plasmon polariton mode are thus coupled in the MG through the evanescent field for sensing applications. The refractive indexes of pure water and isopropanol are measured. A sensitivity of 917 nm/RIU is obtained.

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