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Optical waveguide channel branches in Ti-diffused LiNbO(3).

W K Burns, R P Moeller, C H Bulmer

|March 18, 2010

Summary

This summary is machine-generated.

This study measured splitting ratios in titanium-indiffused lithium niobate (Ti:LiNbO3) waveguide branches. Experimental results align with theoretical calculations for branch parameters and transmission losses.

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Area of Science:

Optoelectronics
Materials Science
Photonics

Background:

Titanium-indiffused lithium niobate (Ti:LiNbO3) is a key material for integrated optics.
Waveguide branches are fundamental components in photonic integrated circuits.

Purpose of the Study:

To experimentally measure splitting ratios in Ti:LiNbO3 channel waveguide branches.
To investigate the influence of branch angle and asymmetry on splitting ratios.
To compare experimental data with theoretical predictions.

Main Methods:

Fabrication of Ti:LiNbO3 channel waveguide branches.
Measurement of splitting ratios as a function of branch angle and asymmetry.
Application of the effective index method dispersion theory for parameter calculation.
Measurement of channel transmission loss and branch transmission for ordinary modes.
Novel method for measuring prism output coupling efficiency.

Main Results:

Splitting ratios were successfully measured in Ti:LiNbO3 channel waveguide branches.
Experimental results showed qualitative agreement with theoretical calculations.
Transmission loss and branch transmission data were obtained for ordinary modes.
A new technique for prism output coupling efficiency measurement was demonstrated.

Conclusions:

The effective index method provides a reasonable theoretical basis for understanding Ti:LiNbO3 waveguide branch behavior.
Experimental validation confirms the qualitative accuracy of theoretical models.
The study contributes to the design and optimization of photonic devices.