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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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An ultracompact multimode interference wavelength splitter employing asymmetrical multi-section structures.

Chen Yao1, Heinz-Gunter Bach, Ruiyong Zhang

  • 1State State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, 100876, China. chen.yao@hhi-extern.fraunhofer.de

Optics Express
|October 6, 2012
PubMed
Summary
This summary is machine-generated.

A new asymmetrical multi-section wavelength splitter was designed using multimode interference. This novel optical device is significantly shorter and offers improved performance for applications like wavelength multiplexers.

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Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics

Background:

  • Wavelength splitters are crucial components in optical communication systems.
  • Existing designs often face limitations in size and performance.

Purpose of the Study:

  • To propose and simulate a novel asymmetrical multi-section wavelength splitter.
  • To achieve significant size reduction and performance enhancement compared to conventional designs.

Main Methods:

  • Utilized the film mode matching method for design.
  • Employed multimode interference principles.
  • Simulated the proposed asymmetrical multi-section structure.

Main Results:

  • The novel wavelength splitter design is significantly shorter, reduced to at least 1/5 the length of conventional designs.
  • Demonstrated improved performance characteristics.
  • The structure is suitable for splitting 1.55/1.31 μm wavelengths and potentially others.

Conclusions:

  • The proposed asymmetrical multi-section wavelength splitter offers a compact and high-performance solution.
  • This design is applicable to wavelength multiplexers, self-biased photodiodes, and other optical devices.
  • The design exhibits tolerance to fabrication variations.