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

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

55 Scopus citations


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
Issue number1
StatePublished - 01 2005
Externally publishedYes


Dive into the research topics of 'Photonic crystal directional couplers formed by InAlGaAs nano-rods'. Together they form a unique fingerprint.

Cite this