Acta Optica Sinica, Volume. 32, Issue 1, 106001(2012)
An Elliptical-Core Hollow Fiber with High Second-Order Nonlinearity
A novel elliptical-core hollow fiber (ECHF) with high second-order nonlinearity (SON) applied in phase modulator is proposed and fabricated. A large linear electro-optic phase shift observed in the fiber has been induced by thermal poling at about 300 ℃ for 30 min with an electric field larger than 1×108 V/m and a 9-cm-length electrode. Based on ECHF an in-fiber Mach-Zehnder interferometer (MZI) is constructed, movement of interference fringe to estimate phase shift is observed. As high as 1.16 pm/V SON coefficient and 0.52 pm/V linear electro-optic (EO) coefficient are obtained. This technology is simple and versatile that can be utilized to fabricate high EO coefficient devices, which can decrease fabrication cost, and realize higher integration level of all fiber devices.
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Tian Fengjun, Yuan Libo, Liu Zhihai, Bo Fusen. An Elliptical-Core Hollow Fiber with High Second-Order Nonlinearity[J]. Acta Optica Sinica, 2012, 32(1): 106001
Category: Fiber Optics and Optical Communications
Received: Jul. 15, 2011
Accepted: --
Published Online: Dec. 1, 2011
The Author Email: Fengjun Tian (tianfengjun0424@yahoo.com.cn)