Abstract

We design a photonic crystal T-junction waveguide on the basis of the nonradiative surface mode and further optimize the transmission ratio of our surface mode photonic crystal T-junction waveguide with the guide of coupled-mode theory. Compared with a traditional bandgap photonic crystal T-junction waveguide, our surface mode T-junction waveguide can obtain almost zero reflectance and good transmission. Better still, its size is just half of the size of bandgap photonic crystal waveguide branches. To the best of our knowledge, it is the first time that such a high-efficiency T-junction waveguide that uses the surface mode as the guided mode is proposed.

© 2011 Optical Society of America

Ultracompact 1×4 TM-polarized beam splitter based on photonic crystal surface mode

Bin Jiang, Yejin Zhang, Yufei Wang, Anjin Liu, and Wanhua Zheng
Appl. Opt. 51(13) 2361-2366 (2012)

High transmitting and coupling characteristics of light at the surface of a photonic crystal with a triangular lattice of air holes

Jun Zhang, Tianbao Yu, Nianhua Liu, Jianyi Yang, Qinghua Liao, and Xiaoqing Jiang
J. Opt. Soc. Am. B 29(4) 748-752 (2012)

Topology optimization of photonic crystal structures: a high-bandwidth low-loss T-junction waveguide

Jakob S. Jensen and Ole Sigmund
J. Opt. Soc. Am. B 22(6) 1191-1198 (2005)

Systematic design study of waveguides and waveguide bends in diamond-structured photonic crystals

Amit Vishnoi, Rina Mudi, and Kapil Debnath
J. Opt. Soc. Am. B 38(3) 907-913 (2021)

Junction-type photonic crystal waveguides for notch- and pass-band filtering

Naeem Shahid, Muhammad Amin, Shagufta Naureen, Marcin Swillo, and Srinivasan Anand
Opt. Express 19(21) 21074-21080 (2011)