Photonic-crystal diplexers for terahertz-wave applications | Zendy

Masahiro Yata | Zendy; Masayuki Fujita | Zendy; Tadao Nagatsuma | Zendy

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Photonic-crystal diplexers for terahertz-wave applications

Author(s) -

Masahiro Yata,

Masayuki Fujita,

Tadao Nagatsuma

Publication year - 2016

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.007835

Subject(s) - diplexer , terahertz radiation , optics , photonic crystal , bandwidth (computing) , wavelength , optoelectronics , photonics , photonic integrated circuit , materials science , terahertz spectroscopy and technology , physics , telecommunications , computer science

A compact diplexer is designed using a silicon photonic-crystal directional coupler of length comparable to the incident wavelength. The diplexer theoretically and experimentally exhibits a cross state bandwidth as broad as 2% of the operation frequency, with over 40-dB isolation between the cross and bar ports. We also demonstrate 1.5-Gbit/s frequency-division communication in the 0.32- and 0.33-THz bands using a single-wavelength-sized diplexer, and discuss the transmission bandwidth. Our study demonstrates the potential for application of photonic crystals as terahertz-wave integration platforms.

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