Polarization-independent linear waveguides in 3D photonic crystals.

Using a symmetry-based approach, we have designed polarization-independent waveguides in a 3D photonic crystal. A comprehensive series of numerical experiments, involving the propagation of pulsed signals through long straight waveguide sections and sharp bends, quantitatively evaluates the bend-transmission coefficient over the entire bandwidth of the corresponding guided modes. High (approximately 95%) polarization-independent bend transmission is achieved within a certain frequency range.

[1]  Steven G. Johnson,et al.  Three-dimensionally periodic dielectric layered structure with omnidirectional photonic band gap , 2000 .

[2]  Steven G. Johnson,et al.  High-density integrated optics , 1999 .

[3]  Andrew G. Glen,et al.  APPL , 2001 .

[4]  Ekmel Ozbay,et al.  Guiding, bending, and splitting of electromagnetic waves in highly confined photonic crystal waveguides , 2001 .

[5]  J. C. Chen,et al.  Quartic perfectly matched layers for dielectric waveguides and gratings , 1995 .

[6]  Susumu Noda,et al.  Highly confined waveguides and waveguide bends in three-dimensional photonic crystal , 1999 .

[7]  Ekmel Ozbay,et al.  EXPERIMENTAL DEMONSTRATION OF PHOTONIC CRYSTAL BASED WAVEGUIDES , 1999 .

[8]  Henri Benisty,et al.  Enhanced transmission through photonic-crystal-based bent waveguides by bend engineering , 2001 .

[9]  Min Cao,et al.  Small radius bends and large angle splitters in SOI waveguides , 1997, Photonics West.

[10]  Anne Talneau,et al.  Photonic-crystal ultrashort bends with improved transmission and low reflection at 1.55 μm , 2002 .

[11]  J. Joannopoulos,et al.  Photonic crystals: putting a new twist on light , 1997, Nature.

[12]  A. Rubio Bretones,et al.  Finite difference time domain methods , 2003 .

[13]  J. Joannopoulos,et al.  High Transmission through Sharp Bends in Photonic Crystal Waveguides. , 1996, Physical review letters.

[14]  Steven G. Johnson,et al.  Quantitative Analysis of Bending Efficiency in Photonic-Crystal Waveguide Bends at x=1.55{micro}m Wavelengths , 2001 .

[15]  D. Larkman,et al.  Photonic crystals , 1999, International Conference on Transparent Optical Networks (Cat. No. 99EX350).

[16]  A. Tomita,et al.  Lightwave propagation through a 120° sharply bent single-line-defect photonic crystal waveguide , 2000 .

[17]  Steven G. Johnson,et al.  Emulation of two-dimensional photonic crystal defect modes in a photonic crystal with a three-dimensional photonic band gap , 2001 .

[18]  S. Noda,et al.  Full three-dimensional photonic bandgap crystals at near-infrared wavelengths , 2000, Science.