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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 33 — Nov. 20, 2013
  • pp: 7981–7986

Theoretical and experimental study of 37-core waveguides with large mode area

Ping Wang, Guanghua Cheng, Ruimin Yi, Xin Liu, Tao Shang, Zhansheng Wang, and Lixin Guo  »View Author Affiliations

Applied Optics, Vol. 52, Issue 33, pp. 7981-7986 (2013)

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The evanescently coupled multicore waveguide lattice composed of 37 linear type I cores hexagonally arranged has been theoretically studied and fabricated by low-repetition-rate femtosecond laser inscription of bulk fused silica. The effects of the single core’s numerical apertures (NAs) and spacing on the mode characteristics of the 37-core waveguide were calculated by the finite-element method. It was found that the mode field areas of the fundamental mode LP01 with 5 μm spacing of different NAs were all larger than 577μm2, which was confirmed by the experiments. The measured near-field mode profiles for different writing conditions and different spacing also showed that the waveguide supported both a single mode (LP01) and two modes (LP01 and LP11). The multicore waveguide, according to our study, is particularly interesting for mode converters.

© 2013 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.7370) Optical devices : Waveguides

ToC Category:
Optical Devices

Original Manuscript: July 26, 2013
Revised Manuscript: September 30, 2013
Manuscript Accepted: October 17, 2013
Published: November 13, 2013

Ping Wang, Guanghua Cheng, Ruimin Yi, Xin Liu, Tao Shang, Zhansheng Wang, and Lixin Guo, "Theoretical and experimental study of 37-core waveguides with large mode area," Appl. Opt. 52, 7981-7986 (2013)

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