Abstract

Segmented strip-loaded waveguide arrays are investigated within a rigorous square lattice photonic crystal model. We derive a full multiband discrete diffraction approach for near-axial injection in the direction of a lattice vector. We obtain an effective waveguide array picture, with quasi-linear dependence on the segmentation ratio in a simplified single-band scheme. Our results are validated by beam deviation experiments. Such a diffraction framework allows for efficient shaping of the phase map in waveguide arrays and enriches the engineering toolkit of photonic crystals with the in-plane free propagation structures of discrete photonics.

© 2017 Optical Society of America

Photonic crystal slow light waveguides in a kagome lattice

Sebastian A. Schulz, Jeremy Upham, Liam O’Faolain, and Robert W. Boyd
Opt. Lett. 42(16) 3243-3246 (2017)

Morphing discrete diffraction in nonlinear Mathieu lattices

Alessandro Zannotti, Jadranka M. Vasiljević, Dejan V. Timotijević, Dragana M. Jović Savić, and Cornelia Denz
Opt. Lett. 44(7) 1592-1595 (2019)

Photonic Loschmidt echo in binary waveguide lattices

S. Longhi
Opt. Lett. 42(13) 2551-2554 (2017)

Zak phase induced multiband waveguide by two-dimensional photonic crystals

Yuting Yang, Tao Xu, Yun Fei Xu, and Zhi Hong Hang
Opt. Lett. 42(16) 3085-3088 (2017)

Fan-beam steering device using a photonic crystal slow-light waveguide with surface diffraction grating

Keisuke Kondo, Tomoki Tatebe, Shoji Hachuda, Hiroshi Abe, Fumio Koyama, and Toshihiko Baba
Opt. Lett. 42(23) 4990-4993 (2017)