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Crystals 2016, 6(6), 67; doi:10.3390/cryst6060067

Add-Drop Filter Based on Wavelength-Dependent Light Interlink between Lithium-Niobate Microwaveguide Chip and Microfiber Knot Ring

1
Key Laboratory of Optoelectronic Information and Sensing, Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China
2
Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China
3
Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Jinan University, Guangzhou 510632, China
*
Author to whom correspondence should be addressed.
Academic Editor: Maria-Pilar Bernal
Received: 31 March 2016 / Revised: 1 June 2016 / Accepted: 2 June 2016 / Published: 9 June 2016
(This article belongs to the Special Issue Lithium Niobate Crystals)
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Abstract

In this paper, we experimentally demonstrate an add-drop filter based on wavelength-dependent light coupling between a lithium-niobate (LN) microwaveguide chip and a microfiber knot ring (MKR). The MKR was fabricated from a standard single-mode fiber, and the LN microwaveguide chip works as a robust substrate to support the MKR. The guided light can be transmitted through add and drop functionality and the behaviors of the add-drop filter can be clearly observed. Furthermore, its performance dependence on the MKR diameter is also studied experimentally. The approach, using a LN microwaveguide chip as a platform to couple and integrate the MKR, may enable us to realize an optical interlink between the microstructured chip and the micro/nano fiber-optic device. View Full-Text
Keywords: add-drop filter; microfiber knot ring; lithium niobate; wavelength dependent add-drop filter; microfiber knot ring; lithium niobate; wavelength dependent
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhou, S.; Wang, Y.; He, D.; Hu, Y.; Yu, J.; Chen, Z.; Guan, H.; Zhang, J.; Luo, Y.; Tang, J.; Lu, H. Add-Drop Filter Based on Wavelength-Dependent Light Interlink between Lithium-Niobate Microwaveguide Chip and Microfiber Knot Ring. Crystals 2016, 6, 67.

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