Fabrication and implementation of a multi-to-single mode converter based on a tapered multimode fiber

Yi Yang, Jon Lee, Karl Reichard, Paul Ruffin, Frank Liang, Dave Ditto, Shizhuo Yin

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

In this paper, an efficient multi-to-single mode converter based on a tapered multimode fiber is presented. This novel tapered multimode fiber has a multimode input end and a single mode output end, which is fabricated by a reproducible chemical etching process. The core diameter of the thicker end of the fiber is around 150 μm (a typical multimode fiber case) while the core diameter of the thinner end of the fiber is around 10 μm (a typical single mode fiber case). By launching the light into the tapered multimode fiber from the thicker end, the multimode light field distribution at the thicker input end becomes a single mode light field distribution at the thinner output end. Thus, a unique multi-to-single mode conversion is achieved. The major advantages of this mode converter include: (1) high conversion efficiency (>95% based on theoretical analysis), (2) compact size and (3) low cost, which make it very useful for a variety of applications, such as: (1) efficiently coupling the light from a laser, in particular a semiconductor diode laser, into a single mode fiber; (2) highly sensitive evanescent wave based fiber optic sensors and (3) effective mode conversion and connection between multimode and single mode fibers. Experimental results have confirmed this theoretical prediction (i.e., a multi-to-single mode conversion can be realized via a special tapered multimode fiber).

Original languageEnglish (US)
Pages (from-to)129-137
Number of pages9
JournalOptics Communications
Volume249
Issue number1-3
DOIs
StatePublished - May 1 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Fabrication and implementation of a multi-to-single mode converter based on a tapered multimode fiber'. Together they form a unique fingerprint.

  • Cite this