Optical waveguide 3x3 switch: theory of tuning and control.

Area of Science:

• Optical engineering
• Integrated optics
• Waveguide theory

Background:

• Accurate characterization of optical waveguides is crucial for integrated photonic devices.
• Understanding propagation constants and coupling coefficients is key to controlling light in waveguides.

Purpose of the Study:

• To theoretically propose an experimental procedure for estimating coupling coefficients and propagation constant differences.
• To enable the construction of a complete 3x3 switch for arbitrary device lengths.

Main Methods:

• Assuming a linear relationship between propagation constants and control voltages.
• Proposing an experimental estimation procedure.
• Analyzing control conditions for each switching state.

Main Results:

• A theoretical framework for experimental estimation of key waveguide parameters.
• A method for constructing a complete 3x3 switch by dividing control electrodes.
• Analysis of control conditions for various switching states.

Conclusions:

• The proposed method provides a theoretical basis for experimentally determining waveguide parameters.
• This approach facilitates the design and fabrication of arbitrary length 3x3 optical switches.
• Control conditions for switching states are analyzed, aiding device implementation.