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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 32, Iss. 9 — May. 1, 2014
  • pp: 1717–1725

Hollow Core Bragg Fibers With a Heterostructured Cladding Based on Ternary One-Dimensional Photonic Crystal for Mid-infrared Broadband and Low-Loss Transmission

Liang Shang, Xiuqin Yang, Yunjie Xia, and Hengliang Wang

Journal of Lightwave Technology, Vol. 32, Issue 9, pp. 1717-1725 (2014)


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Abstract

We propose a hollow core Bragg fiber (HC-BF) with a heterostructured cladding based on the ternary 1-D photonic crystal (T-1DPC) in this paper. The distinguishing ternary unit cell of T-1DPC is formed from a polyetherimide (PEI) layer sandwiched by two As $_{2}$ Se $_{3}$ layers of the same thickness. We demonstrate its capability for mid-infrared broadband and low-loss transmission by numerically simulating and analyzing the omnidirectional photonic bandgap (OPBG) and the modal loss characteristics. The results show that the T-1DPC-based heterostructured cladding can effectively broaden the OPBG, which is only due to the blue-shift of the lower bandgap edge wavelength. Compared with that for the binary-1DPC-based HC-BF, the transmission loss for the T-1DPC-based HC-BF can be reduced by three orders of magnitude over most of the OPBG range. The large loss contrast is essentially attributed to the enhancement of the multilayer reflection from the T-1DPC-based cladding. Most notably, for a T-1DPC-based cladding with three groups, the transmission band with loss lower than 0.01 dB/m for the HE $_{11}$ mode can cover almost the whole 3 to 5 μm range, with the exception of several loss peaks near the short-wavelength edge. Even with the cladding material absorption included, the transmission loss for the HE $_{11}$ mode in the T-1DPC-based HC-BF can be still lower than 0.1 dB/m over the whole OPBG range.

© 2014 IEEE

Citation
Liang Shang, Xiuqin Yang, Yunjie Xia, and Hengliang Wang, "Hollow Core Bragg Fibers With a Heterostructured Cladding Based on Ternary One-Dimensional Photonic Crystal for Mid-infrared Broadband and Low-Loss Transmission," J. Lightwave Technol. 32, 1717-1725 (2014)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-32-9-1717

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