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Proceedings Paper

Fabrication of lithium niobate-based low-loss bend optical waveguide
Author(s): Xin Li; Ang Liu; Yu Qiu; Jie Feng; Jun-Jiang Chen; Xue-song Lin; Shi-han Yang; Zi-gang Zhou
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Paper Abstract

The bend waveguide is one of the key components of photonic integration. In this paper, by using tightly focused femtosecond laser pulses with repetition rate of 76 MHz, pulse duration of 50 fs, average output power about 270mW, and the focus lens NA=0.65, we put forward a structure of waveguide that bent it to be 1/4 round, and research its mechanism by performing experiments. Under the above conditions, when the vertical scanning speed of the laser system is 0.8 mm / s, the width of the bend optical waveguide is about 10μm, the loss reaches a minimum value about 1dB/cm when the bend way’s radius is about 5mm. Based on the experimental results of the above parameters, we can fabricate a 1/4 round vertical bend fiber coupler, which can be applied to the connection between the chips or inter-level optical .The results showed that the bend lithium niobate waveguides can be applied in the field of optical communication and has important implications for the production of low loss, low cost and small size optical waveguide gratings , vertical fiber coupler, optical switches and other devices .

Paper Details

Date Published: 18 November 2014
PDF: 11 pages
Proc. SPIE 9266, High-Power Lasers and Applications VII, 92661M (18 November 2014); doi: 10.1117/12.2073602
Show Author Affiliations
Xin Li, Southwest Univ. of Science and Technology (China)
Ang Liu, Southwest Univ. of Science and Technology (China)
Yu Qiu, Southwest Univ. of Science and Technology (China)
Jie Feng, Southwest Univ. of Science and Technology (China)
Jun-Jiang Chen, Southwest Univ. of Science and Technology (China)
Xue-song Lin, Southwest Univ. of Science and Technology (China)
Shi-han Yang, Southwest Univ. of Science and Technology (China)
Zi-gang Zhou, Southwest Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9266:
High-Power Lasers and Applications VII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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