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- Nonlinear endomicroscopy using a double-clad fiber coupler
- Bao, Hongchun; Ryu, Seon Young; Lee, Byeong Ha; Tao, Wei; Gu, Min
- A double-clad fiber coupler is developed to be used in two-photon-excited fluorescence endomicroscopy to replace a dichroic mirror and separate the fluorescence signal from the excitation laser beam. With the double-clad fiber coupler, the endomicroscope becomes more compact, easier to be aligned, and more stable in alignment. The double-clad fiber coupler can transmit 62% of the excitation laser beam through the core. The fluorescence collection efficiency of the double-clad fiber coupler is 34%, which is, to the best of our knowledge, the highest fluorescence collection efficiency achieved by couplers used in two-photon-excited fluorescence endomicroscopes. As a result, the contrast of endomicroscopy imaging is enhanced.
- Publication type
- Journal article
- Research centre
- Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics
- Optics Letters, Vol. 35, no. 7 (Apr 2010), pp. 995-997
- Publication year
- FOR Code(s)
- 0205 Optical Physics
- Double-clad fiber coupler; Endomicroscopy; Laser beams; Two-photon-excited fluorescence
- Optical Society of America
- Publisher URL
- Copyright © 2010 Optical Society of America. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.35.000995. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
- Additional information
- The authors thank the Australian Research Council and the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (No. R01-2007-000-20821-0) for their support.
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