Monolithically integrated photonic-crystal devices with photodiodes

W. Y. Chiu, Y. S. Wu, Y. J. Chan, T. D. Wang, C. H. Hou, H. T. Chien, Chii Chang Chen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


In this paper, we demonstrate the monolithic integration of a conventional waveguide, a photonic crystal demultiplexer, a photonic crystal taper coupler, photonic crystal waveguides, and photodiodes in InGaAsP-based material to form a planar nano-optics system. Photonic crystal demultiplexers consist of hexagonally arranged air holes. Finite-difference time-domain method is implemented to investigate the performance of the demultiplexer. The system is fabricated using e-beam lithography and conventional photolithography. The input light at wavelengths of 1530 and 1550 nm can be separated using the demultiplexing system. These can then be detected by photodiodes that exhibit a wide-bandwidth performance of 22 GHz.

Original languageEnglish
Pages (from-to)4749-4751
Number of pages3
JournalOptics Communications
Issue number19
StatePublished - 1 Sep 2011


  • E-beam lithography
  • Photonic crystal device
  • Wavelength division multiplexer


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