Wavelength tuning by bending a flexible photonic crystal laser

Kung Shu Hsu, Tzu Ting Chiu, Po-Tsung Lee, Min Hsiung Shih

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


This study demonstrated mechanical wavelength fine-tuning of a flexible photonic crystal (PhC) laser. A triangular PhC structure was fabricated in an InGaAsP layer on top of a polydimethylsiloxane substrate. Experiments showed two lasing modes at symmetry points K and M in the first PhC band. The laser structure was bent along the Γ-M direction and the lasing wavelength was fine-tuned by varying the bending radius. The lasing wavelength shift is attributed to PhC lattice distortion and its tuning behavior corresponds with the simulation results. This ultra-small, wavelength-tunable laser could function as a unique light source for integrated optoelectronic circuits.

Original languageEnglish
Article number6516080
Pages (from-to)1960-1964
Number of pages5
JournalJournal of Lightwave Technology
Issue number12
StatePublished - 3 Jun 2013


  • Photonic crystals
  • polymer active devices
  • semiconductor lasers

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