Second-order nonlinearity and phase matching in thermally poled twin-hole fiber

2004 ◽  
Author(s):  
Toru Mizunami ◽  
Takahiro Tsukada ◽  
Yasuhiro Noi ◽  
Keiichi Horimoto
Keyword(s):  
Second Order ◽  
Phase Matching ◽  
Thermally Poled ◽  
Second Order Nonlinearity

WAVELENGTH CONVERSION OF AN INFRARED SIGNAL THROUGH CASCADED SECOND-ORDER NONLINEARITY IN A LITHIUM-NIOBATE CHANNEL WAVEGUIDE

2000 ◽  
Vol 09 (01) ◽  
pp. 11-20 ◽  
Author(s):  
I. CRISTIANI ◽  
M. RINI ◽  
A. RAMPULLA ◽  
G. P. BANFI ◽  
V. DEGIORGIO
Keyword(s):  
Lithium Niobate ◽  
Pulse Energy ◽  
Wavelength Conversion ◽  
Second Order ◽  
Channel Waveguide ◽  
Phase Matching ◽  
Order Process ◽  
Pump Pulse Energy ◽  
Second Order Nonlinearity ◽  
Second Order Process

We describe a wavelength conversion experiment (generation of a pulse at the wavelength λp - Δλ from a signal at λp+Δλ under the action of a pump at λp) performed through cascaded second-order process in a lithium niobate channel waveguide. With a 58-mm-long Ti diffused channel waveguide, λp=1.1 μ m (the wavelength of phase matching for the first step of sh generation), Δλ of several nanometers and 20 ps pulse duration, wavelength conversion with unit efficiency is obtained with a pump pulse energy of the order of 102 pJ. The experimental results are successfully interpreted by making use of modal analysis and solving the appropriate nonlinear equations.

scholarly journals Dynamics of the second-order nonlinearity in thermally poled silica glass

2001 ◽  
Vol 79 (17) ◽  
pp. 2687-2689 ◽  
Author(s):  
D. Faccio ◽  
V. Pruneri ◽  
P. G. Kazansky
Keyword(s):  
Silica Glass ◽  
Second Order ◽  
Thermally Poled ◽  
Second Order Nonlinearity

scholarly journals Humidity effect on the decay of second-order nonlinearity in thermally poled fused silica

2006 ◽  
Vol 14 (25) ◽  
pp. 12334 ◽  
Author(s):  
Huai-Yi Chen ◽  
Feng-Fan Chang ◽  
Jia-Cheng Liao ◽  
Shiuh Chao
Keyword(s):  
Fused Silica ◽  
Second Order ◽  
Humidity Effect ◽  
Thermally Poled ◽  
Second Order Nonlinearity

ENHANCING CONVERSION EFFICIENCY IN THE SECOND-ORDER NONLINEAR OPTICAL PHENOMENA

2004 ◽  
Vol 13 (03n04) ◽  
pp. 445-449
Author(s):  
JONGBAE KIM ◽  
JUNG JIN JU ◽  
MIN-SU KIM
Keyword(s):  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Phase Matching ◽  
Quasi Phase Matching ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena ◽  
Second Order Nonlinearity

The distributions of electric field and the induced second-order nonlinearity are discussed in a poling scheme where the width of a periodic electrode is shorter than the conventional coherent length. The theoretical aspects of quasi-phase matching for a subsequent experiment in second harmonic generation are analyzed. The present analysis consistently explains that the conversion efficiency can be enhanced if the electrode width is shortened, and maximized if the electrode width is optimized.

Large second-order nonlinearity in thermally poled Ge–Sb–Cd–S chalcogenide glass

2009 ◽  
Vol 31 (6) ◽  
pp. 865-869 ◽  
Author(s):  
Haitao Guo ◽  
Xiaolin Zheng ◽  
Min Lu ◽  
Kuaisheng Zou ◽  
Bo Peng ◽  
...  
Keyword(s):  
Chalcogenide Glass ◽  
Second Order ◽  
Thermally Poled ◽  
Second Order Nonlinearity

scholarly journals Thermal Poling of New Double-Hole Optical Fibers

2019 ◽  
Vol 9 (11) ◽  
pp. 2176 ◽  
Author(s):  
Shuilian Wang ◽  
Zhenyi Chen ◽  
Na Chen ◽  
Wenjie Xu ◽  
Qiangda Hao ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Nonlinear Coefficient ◽  
Fused Silica ◽  
Second Order ◽  
Central Symmetry ◽  
Internal Electric Field ◽  
Element Analysis ◽  
Thermal Poling ◽  
Thermally Poled ◽  
Second Order Nonlinearity

Fused silica are common fiber materials which have macroscopic central symmetry without second-order nonlinearity. Studies have shown that thermal poling of fused silica fibers can destroy this macroscopic central symmetry, resulting in second-order nonlinearity or linear electro-optical effects. In this paper, a new type of double-hole optical fiber is designed. A two-dimensional (2D) numerical model is used to simulate the movement of ions and the formation of space charge region by finite element analysis. It is found that the single round square hole structure of the new double-hole fiber promotes the thermal poling process. The effective second-order nonlinear coefficient χ eff ( 2 ) of the new double-hole poled fiber is 0.28 pm/V at the core center, which is 0.05 pm/V higher than that of the circular double-hole poled fiber. In the fiber core, the radial distribution of the internal electric field and of χ eff ( 2 ) is calculated and analyzed. The results of this paper are of great significance for the application of thermally poled fibers on nonlinear all-fiber devices.

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