Fiber array fabrication technique for 15-μm-diameter single-mode fibers

Lina J. Arauz, Yuan Luo, Jose E. Castillo, Jennifer K Barton, Raymond K Kostuk

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We describe a technique to package 15-μm-diam single-mode fibers on a silicon substrate that can be incorporated into an endoscopic probe tip. The single-mode fibers in the array can be used in coherent imaging applications such as optical coherence tomography. Fiber-to-substrate and fiber-to-fiber coupling effects are studied using beam propagation techniques to determine the different design characteristics and the maximum length of the reduced diameter fiber that can be packaged in the probe tip. Single-mode fibers are etched to reduce the cladding diameter from 125to15μm. A 2-μm-thick silica layer is grown in the silicon substrate to minimize the fiber-substrate coupling. Reduced diameter fibers are placed into a 5-mm by 150-μm trench etched in a silicon-silica substrate and fixed with UV curable cement. Active alignment is used to ensure the correct alignment of fibers. The fiber array is experimentally evaluated to test fiber placement accuracy, throughput, and cross talk. Optical coherence tomography images are also obtained with the array.

Original languageEnglish (US)
Article number074002
JournalOptical Engineering
Volume47
Issue number7
DOIs
StatePublished - 2008

Fingerprint

Single mode fibers
Fabrication
fabrication
fibers
Fibers
Substrates
Optical tomography
Silicon
Silica
silicon
tomography
alignment
silicon dioxide
probes
Cements
cements
Throughput
Imaging techniques

Keywords

  • endoscope
  • fiber array
  • probe tip

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

Cite this

Fiber array fabrication technique for 15-μm-diameter single-mode fibers. / Arauz, Lina J.; Luo, Yuan; Castillo, Jose E.; Barton, Jennifer K; Kostuk, Raymond K.

In: Optical Engineering, Vol. 47, No. 7, 074002, 2008.

Research output: Contribution to journalArticle

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