Photonic crystal directional couplers formed by InAlGaAs nano-rods

Chii Chang Chen, Chih Yu Chen, Wen Kai Wang, Fan Hsiu Huang, Cheng Kuo Lin, Wei Yu Chiu, Yi Jen Chan

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

This study demonstrates the use of photonic crystal directional couplers to separate light of wavelengths 1.31 and 1.55μm. The photonic crystal structure consists of InAlGaAs nano-rods arranged in square lattice. The coupling length of the light in the directional coupler at a wavelength of 1.31pm was designed to be four times greater than that at 1.55μm. This behavior helps in designing devices to split the two wavelengths. The devices are fabricated by e-beam lithography and conventional photolithography. The measurement results confirm that 1.31μm/1.55μm directional couplers can be realized in PC structures formed by nano-rods.

Original languageEnglish
Pages (from-to)38-43
Number of pages6
JournalOptics Express
Volume13
Issue number1
DOIs
StatePublished - Jan 2005

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