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Group Polarization

Group Polarization

Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.

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Updated: May 19, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Highly tolerant tunable waveguide polarization rotator scheme.

C Alonso-Ramos¹, R Halir, A Ortega-Moñux

¹Departamento Ingeniería de Comunicaciones, ETSI Telecomunicación, Universidad de Málaga, 29010 Málaga, Spain. caar@ic.uma.es

|September 4, 2012

Summary

This summary is machine-generated.

This study introduces a new polarization rotator design that tolerates fabrication errors and allows wavelength tuning. This innovation significantly improves performance and practical application of polarization control devices.

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Area of Science:

Photonics and Optical Engineering
Integrated Optics

Background:

Integrated polarization rotators face challenges due to strict fabrication tolerances, limiting their real-world use.
Existing designs are sensitive to manufacturing imperfections, leading to poor performance.

Purpose of the Study:

To present a novel polarization rotator scheme that compensates for fabrication errors.
To achieve wavelength tunability in integrated polarization rotators.

Main Methods:

Analytical description of the proposed polarization rotator scheme.
Establishment of conditions for perfect polarization conversion.
Simulations using a silicon-on-insulator platform.

Main Results:

Demonstrated compensation for significant fabrication errors.
Achieved polarization extinction ratios exceeding 40 dB, a substantial improvement over conventional designs (below 5 dB).
Exhibited wavelength tunability over a range of ±30 nm.

Conclusions:

The proposed scheme offers a robust solution for integrated polarization control.
This advancement enhances the practical applicability of polarization rotators in photonic integrated circuits.
The design provides both error tolerance and wavelength tunability, crucial for advanced optical systems.