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Updated: May 25, 2026
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
Polarization rotator for InP rib waveguide
C Alonso-Ramos1, S Romero-García, A Ortega-Moñux
1Departamento Ingeniería de Comunicaciones, ETSI Telecomunicación, Universidad de Málaga, Málaga, Spain. caar@ic.uma.es
Optics Letters
|February 3, 2012
Summary
A novel InP-based polarization rotator for optical receivers offers high extinction ratios and low insertion loss. Its simplified two-step fabrication process reduces cost and complexity for integrated photonic devices.
Area of Science:
- Photonics and Optical Engineering
- Semiconductor Device Fabrication
Background:
- Polarization diversity optical receivers are crucial for high-performance optical communication systems.
- Efficient polarization control is essential for maintaining signal integrity in these receivers.
- Existing polarization converters often involve complex fabrication processes and higher costs.
Purpose of the Study:
- To propose and analyze a novel polarization rotator integrated into InP technology.
- To achieve high performance metrics including low insertion loss and high extinction ratio.
- To develop a cost-effective and simplified fabrication process for the device.
Main Methods:
- Design of a two-step waveguide polarization rotator with tapered input/output ports.
- Simulation and analysis of optical performance at 1550 nm wavelength.
- Evaluation of fabrication feasibility using standard InP processes.
Main Results:
- Calculated insertion loss below 0.04 dB.
- Achieved extinction ratio of 40 dB at 1550 nm.
- Demonstrated feasibility with a standard two-dry-etch-step fabrication process.
Conclusions:
- The proposed InP polarization rotator offers superior performance and simplified fabrication.
- This design significantly reduces complexity and cost for integrated optical receivers.
- It represents a promising advancement for polarization management in optical communication.
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