A fiber-compatible spectrally encoded imaging system using a 45° tilted fiber grating

Guoqing Wang, Chao Wang, Zhijun Yan, Lin Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We propose and demonstrate, for the first time to our best knowledge, the use of a 45° tilted fiber grating (TFG) as an infiber lateral diffraction element in an efficient and fiber-compatible spectrally encoded imaging (SEI) system. Under proper polarization control, the TFG has significantly enhanced diffraction efficiency (93.5%) due to strong tilted reflection. Our conceptually new fiber-topics-based design eliminates the need for bulky and lossy free-space diffraction gratings, significantly reduces the volume and cost of the imaging system, improves energy efficiency, and increases system stability. As a proof-of-principle experiment, we use the proposed system to perform an one dimensional (1D) line scan imaging of a customer-designed three-slot sample and the results show that the constructed image matches well with the actual sample. The angular dispersion of the 45° TFG is measured to be 0.054°/nm and the lateral resolution of the SEI system is measured to be 28 μm in our experiment.

Original languageEnglish
Title of host publicationOptics, Photonics and Digital Technologies for Imaging Applications IV
EditorsPeter Schelkens, Touradj Ebrahimi, Gabriel Cristóbal, et al
PublisherSPIE
Number of pages7
ISBN (Print)978-1-5106-0141-3
DOIs
Publication statusPublished - 3 Apr 2016
EventOptics, Photonics and Digital Technologies for Imaging Applications IV - Brussels, Belgium
Duration: 5 Apr 20166 Apr 2016

Conference

ConferenceOptics, Photonics and Digital Technologies for Imaging Applications IV
CountryBelgium
CityBrussels
Period5/04/166/04/16

Bibliographical note

Guoqing Wang; Chao Wang; Zhijun Yan and Lin Zhang; "A fiber-compatible spectrally encoded imaging system using a 45° tilted fiber grating", Proc. SPIE 9896, Optics, Photonics and Digital Technologies for Imaging Applications IV, 98960J (April 29, 2016).

Copyright 2016 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

DOI: http://dx.doi.org/10.1117/12.2225140

Keywords

  • angular dispersion
  • diffraction gratings
  • image detection systems
  • tilted fiber Bragg gratings

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  • Cite this

    Wang, G., Wang, C., Yan, Z., & Zhang, L. (2016). A fiber-compatible spectrally encoded imaging system using a 45° tilted fiber grating. In P. Schelkens, T. Ebrahimi, G. Cristóbal, & et al (Eds.), Optics, Photonics and Digital Technologies for Imaging Applications IV [98960J] SPIE. https://doi.org/10.1117/12.2225140