Design, fabrication, and characterization of coupling-strength-controlled directional coupler based on two-dimensional photonic-crystal slab waveguides
- 20 October 2003
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 83 (16) , 3236-3238
- https://doi.org/10.1063/1.1619209
Abstract
A directional coupler (DC) with a coupling-strength control defect (CCD) based on a two-dimensional photonic-crystal slab waveguide is numerically and experimentally studied. The structure consists of two parallel-coupled single-defect waveguides separated by a triple-line air-hole array, with some missing air holes in the middle of the triple line. Using a two-dimensional finite-difference time-domain method, a 50% coupler was designed and almost 50% coupling performance was experimentally confirmed at a wavelength of ∼1.3 μm with a coupling length of about 7 μm, about 1/3 in length as compared to the DC without the CCD.Keywords
This publication has 12 references indexed in Scilit:
- Similar role of waveguide bends in photonic crystal circuits and disordered defects in coupled cavity waveguides: An intrinsic problem in realizing photonic crystal circuitsPhysical Review B, 2003
- Optical directional couplers based on autocloned photonic crystalsElectronics Letters, 2003
- Electro-optical switching using coupled photonic crystal waveguidesOptics Express, 2002
- Low-loss, wide-angle Y splitter at ∼16-µm wavelengths built with a two-dimensional photonic crystalOptics Letters, 2002
- Coupling and decoupling of electromagnetic waves in parallel 2D photonic crystal waveguidesIEEE Journal of Quantum Electronics, 2002
- Y junctions in photonic crystal channel waveguides: high transmission and impedance matchingOptics Letters, 2002
- Fabrication and characterization of different types of two-dimensional AlGaAs photonic crystal slabsJournal of Applied Physics, 2002
- Photonic crystal line defect waveguide directionalcouplerElectronics Letters, 2001
- Waveguide branches in photonic crystalsJournal of the Optical Society of America B, 2001
- All-Optical Switch with Switch-Off Time Unrestricted by Carrier LifetimeJapanese Journal of Applied Physics, 1993