Smart guide: lithium niobate large index contrast waveguides fabricated by crystal ion slicing and wafer bonding

2005 ◽  
Author(s):  
Payam Rabiei ◽  
Peter Gunter
Keyword(s):  
Lithium Niobate ◽  
Wafer Bonding ◽  
Large Index ◽  
Index Contrast ◽  
Crystal Ion Slicing

Fabrication of single-crystal lithium niobate films by crystal ion slicing

1998 ◽  
Vol 73 (16) ◽  
pp. 2293-2295 ◽  
Author(s):  
M. Levy ◽  
R. M. Osgood ◽  
R. Liu ◽  
L. E. Cross ◽  
G. S. Cargill ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Single Crystal ◽  
Crystal Ion Slicing

Ultra thin high index contrast photonic crystal slabs in lithium niobate

2010 ◽  
Vol 33 (1) ◽  
pp. 19-21 ◽  
Author(s):  
Holger Hartung ◽  
Ernst-Bernhard Kley ◽  
Thomas Gischkat ◽  
Frank Schrempel ◽  
Werner Wesch ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Lithium Niobate ◽  
High Index ◽  
Photonic Crystal Slabs ◽  
Index Contrast ◽  
High Index Contrast

Evaluation of low index contrast in lithium niobate waveguides at telecom wavelengths

2019 ◽  
Vol 111 ◽  
pp. 156-162 ◽  
Author(s):  
Alin Marian Apetrei ◽  
Alicia Petronela Rambu ◽  
Sorin Tascu
Keyword(s):  
Lithium Niobate ◽  
Index Contrast

Crystal ion slicing of domain microengineered electro-optic devices on lithium niobate

2001 ◽  
Vol 41 (1-4) ◽  
pp. 35-42 ◽  
Author(s):  
David A. Scrymgeour ◽  
Venkatraman Gopalan ◽  
Tony E. Haynes
Keyword(s):  
Lithium Niobate ◽  
Electro Optic ◽  
Crystal Ion Slicing

Enhanced photonic bandgap in ion-implanted lithium niobate waveguides by improving index contrast

2010 ◽  
Vol 27 (7) ◽  
pp. 1425 ◽  
Author(s):  
Ziyou Zhou ◽  
Xiaoyue Huang ◽  
Raghav Rao Vanga ◽  
Zhuoyuan Wu
Keyword(s):  
Lithium Niobate ◽  
Photonic Bandgap ◽  
Index Contrast ◽  
Ion Implanted

scholarly journals Spontaneous Polarization Reversal Induced by Proton Exchange in Z-Cut Lithium Niobate α-Phase Channel Waveguides

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7127
Author(s):  
Alicia Petronela Rambu ◽  
Vasile Tiron ◽  
Eugen Oniciuc ◽  
Sorin Tascu
Keyword(s):  
Lithium Niobate ◽  
Spontaneous Polarization ◽  
Piezoelectric Coefficient ◽  
Proton Exchange ◽  
Optical Investigation ◽  
Polarization Reversal ◽  
Α Phase ◽  
Channel Waveguides ◽  
Index Contrast ◽  
The Impact

The α-phase waveguides directly produced in one fabrication step only are well known for preserving both the excellent nonlinear properties and the ferroelectric domains orientation of lithium niobate substrates. However, by using the piezoresponse force microscopy (PFM), we present a coherent study on ferroelectric dipoles switching induced by the fabrication process of α-phase waveguides on Z-cut congruent lithium niobate (CLN) substrates. The obtained results show that the proton exchange process induces a spontaneous polarization reversal and a reduction in the piezoelectric coefficient d33. The quantitative assessments of the impact of proton exchange on the piezoelectric coefficient d33 have been quantified for different fabrication parameters. By coupling systematic PFM investigation and optical characterizations of α-phase protonated regions and virgin CLN on ±Z surfaces of the samples, we find a very good agreement between index contrast (optical investigation) and d33 reduction (PFM investigations). We clearly show that the increase in the in-diffused proton concentration (increase in index contrast) in protonated zones decreases the piezoelectric coefficient d33 values. Furthermore, having a high interest in nonlinear performances of photonics devices based on PPLN substrates, we have also investigated how deep the spontaneous polarization reversal induced by proton exchange takes place inside the α-phase channel waveguides.

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