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Tunable dual-wavelength filter and its group delay dispersion in domain-engineered lithium niobate

Authors :
Yan-qing Lu
Guo-xin Cui
Ya-ping Ruan
Guang-hao Shao
Jing Song
Source :
AIP Advances, Vol 6, Iss 12, Pp 125034-125034-7 (2016)
Publication Year :
2016
Publisher :
AIP Publishing, 2016.

Abstract

A tunable dual-wavelength filter is experimentally demonstrated in domain-engineered lithium niobate. Application of an electric field on the y-surfaces of the sample results in the optical axes rotating clockwise and anticlockwise, which makes selective polarization rotation. The quasi phase-matching wavelengths could be adjusted through suitable domain design. A unique dual valley spectrum is obtained in a periodically poled lithium niobate structure with a central defect if the sample is placed between two parallel polarizers. The expected bandwidth could be varied from ∼1 nm to ∼40 nm. Moreover, both the spectral response and group delay dispersion could be engineered.

Details

ISSN :
21583226
Volume :
6
Database :
OpenAIRE
Journal :
AIP Advances
Accession number :
edsair.doi.dedup.....ea4a7a9f66ee5f0edc1ae40423b7fb6a
Full Text :
https://doi.org/10.1063/1.4972281