Depolarization Of Single Mode Channel Waveguides On Lithium Niobate

AbstractA mode-selective directional coupler based on titanium in-diffused channel waveguides in lithium niobate is investigated. This coupler may be utilized as a key part of an add-drop multiplexer for dense wavelength division multiplexing in optical network nodes. The proposed coupler is based on evanescent coupling of the fundamental mode of a single-mode channel to the first higher mode of a parallel bi-modal waveguide. Our experimental results show that a compact directional coupler with coupling efficiencies larger than 90%, large bandwidth around 1550 nm, and with negligible polarization dependence can be realized using electro-optic lithium niobate substrates.

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Use of method for chemical etching for identification of structure of proton exchange channel waveguides fabricated on Z-cut of lithium niobate crystal

2011 International Conference and Seminar on Micro/Nanotechnologies and Electron Devices Proceedings ◽

10.1109/edm.2011.6006898 ◽

2011 ◽

Cited By ~ 2

Author(s):

Vladimir I. Kichigin ◽

Sergey S. Mushinsky ◽

Igor V. Petukhov ◽

Denis I. Shevtsov ◽

Anatoly B. Volyntsev

Keyword(s):

Lithium Niobate ◽

Chemical Etching ◽

Lithium Niobate Crystal ◽

Proton Exchange ◽

Exchange Channel ◽

Channel Waveguides

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Vernier effect facilitates integrated lithium niobate single-mode lasers

Science China Physics Mechanics and Astronomy ◽

10.1007/s11433-021-1814-x ◽

2021 ◽

Vol 65 (3) ◽

Author(s):

Xin-Biao Xu ◽

Chang-Ling Zou

Keyword(s):

Lithium Niobate ◽

Single Mode ◽

Vernier Effect

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Fabrication and Characterisation of Reverse Proton Exchange Optical Waveguides in Neodymium Doped Lithium Niobate Crystals

Materials Science Forum ◽

10.4028/www.scientific.net/msf.480-481.429 ◽

2005 ◽

Vol 480-481 ◽

pp. 429-436

Author(s):

M. Domenech ◽

G. Lifante ◽

F. Cussó ◽

A. Parisi ◽

A.C. Cino ◽

...

Keyword(s):

Lithium Niobate ◽

Optical Waveguides ◽

Spectroscopic Properties ◽

Proton Exchange ◽

Fabrication Process ◽

The Other ◽

Ion Plating ◽

Other Hand ◽

Channel Waveguides ◽

Lithium Niobate Crystals

In this work, the complete fabrication process which combines Proton Exchange (PE) and Reverse Proton Exchange (RPE) in Neodymium doped LiNbO3 channel waveguides is reported. To produce the PE-RPE channel waveguides the fabrication of dielectric SiO2 masks had to be implemented. For this propose, we adopted a technique based on the Ion Plating Plasma Assisted Deposition of SiO2 followed by the standard ultraviolet photolithographic patterning. On the other hand, we determined the main optical and spectroscopic properties of Nd3+ ions in the channel waveguides including the study of the lifetime as function as the polarisation.

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