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Article

Fabrication of an Optical Waveguide-Mode-Field Compressor in Glass Using a Femtosecond Laser

by
Zhengming Liu
1,2,3,
Yang Liao
1,
Zhenhua Wang
4,5,*,
Zhihao Zhang
1,2,3,
Zhaoxiang Liu
1,2,
Lingling Qiao
1 and
Ya Cheng
1,4,5,6,*
1
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2
University of Chinese Academy of Sciences, Beijing 100049, China
3
School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, China
4
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
5
XXL—The Extreme Optoelectromechanics Laboratory, School of Physics and Materials Science, East China Normal University, Shanghai 200241, China
6
Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(10), 1926; https://doi.org/10.3390/ma11101926
Submission received: 6 September 2018 / Revised: 29 September 2018 / Accepted: 5 October 2018 / Published: 10 October 2018
(This article belongs to the Special Issue Intense Optical Pulse Processing)
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Abstract

We report on fabrication of an optical waveguide-mode-field compressor in glass using a femtosecond laser. Our approach is based on building up a stress field within the waveguiding area which is realized by sandwiching the waveguide between a pair of laser-induced-modification-tracks. To induce an adiabatic conversion of the optical mode in the waveguide, the tracks are intentionally designed to be tapered along the waveguide. We show that our technique can allow for reducing the mode field size in a single mode waveguide from more than 10 μm to around 7 μm.
Keywords: optical waveguide; femtosecond laser direct writing; mode-field compressor optical waveguide; femtosecond laser direct writing; mode-field compressor

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MDPI and ACS Style

Liu, Z.; Liao, Y.; Wang, Z.; Zhang, Z.; Liu, Z.; Qiao, L.; Cheng, Y. Fabrication of an Optical Waveguide-Mode-Field Compressor in Glass Using a Femtosecond Laser. Materials 2018, 11, 1926. https://doi.org/10.3390/ma11101926

AMA Style

Liu Z, Liao Y, Wang Z, Zhang Z, Liu Z, Qiao L, Cheng Y. Fabrication of an Optical Waveguide-Mode-Field Compressor in Glass Using a Femtosecond Laser. Materials. 2018; 11(10):1926. https://doi.org/10.3390/ma11101926

Chicago/Turabian Style

Liu, Zhengming, Yang Liao, Zhenhua Wang, Zhihao Zhang, Zhaoxiang Liu, Lingling Qiao, and Ya Cheng. 2018. "Fabrication of an Optical Waveguide-Mode-Field Compressor in Glass Using a Femtosecond Laser" Materials 11, no. 10: 1926. https://doi.org/10.3390/ma11101926

APA Style

Liu, Z., Liao, Y., Wang, Z., Zhang, Z., Liu, Z., Qiao, L., & Cheng, Y. (2018). Fabrication of an Optical Waveguide-Mode-Field Compressor in Glass Using a Femtosecond Laser. Materials, 11(10), 1926. https://doi.org/10.3390/ma11101926

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