Fast and robust beam coupling in a three waveguide directional coupler

Shuo-Yen Tseng, Yao Wun Jhang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We propose fast and robust beam coupling in a three waveguide directional coupler based on Lewis-Riesenfeld invariant theory. This method provides shortcuts to optical waveguide couplers based on coherent tunneling adiabatic passage of photons. The design and performance of directional couplers using the invariant-based inverse engineering are discussed. Beam coupling is achieved by engineering the evolution of the eigenmodes of the invariant. We show that the invariant-based inverse engineering scheme reduces coupler length as compared with the common adiabatic scheme. The device is robust against coupling coefficient variations and has broadband characteristics.

Original languageEnglish
Article number6650075
Pages (from-to)2478-2481
Number of pages4
JournalIEEE Photonics Technology Letters
Volume25
Issue number24
DOIs
Publication statusPublished - 2013 Dec 15

Fingerprint

Directional couplers
directional couplers
Waveguides
engineering
waveguides
couplers
Waveguide couplers
Optical waveguides
coupling coefficients
optical waveguides
Photons
broadband
photons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

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Fast and robust beam coupling in a three waveguide directional coupler. / Tseng, Shuo-Yen; Jhang, Yao Wun.

In: IEEE Photonics Technology Letters, Vol. 25, No. 24, 6650075, 15.12.2013, p. 2478-2481.

Research output: Contribution to journalArticle

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