Hindering effect of the core-cladding interface on the progression of the second-order nonlinearity layer in thermally poled optical fibers

被引：22
作者：
An, HL [1 ]
Fleming, S [1 ]
机构：
[1] Univ Sydney, Australian Photon CRC, Opt Fibre Technol Ctr, Natl Innovat Ctr 206, Eveleigh, NSW 1430, Australia
来源：
APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 10期
关键词：
D O I：
10.1063/1.2040007
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The spatial distribution of the second-order nonlinearity layer induced in thermally poled Ge-doped optical fibers has been investigated with second-harmonic microscopy. It was found that the core-cladding interface acts as an insurmountable barrier to the nonlinear layer at lower poling voltages. At higher poling voltages (> 2.5 kV), the nonlinear layer can partially overcome this barrier and reach the fiber core, in which it is isolated from the rest of the nonlinear layer in the cladding. (c) 2005 American Institute of Physics.
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