Fabrication of self-written polymer waveguides with insertion of mirrors

Shuhei Yasuda, Okihiro Sugihara, Toshikuni Kaino

Research output: Contribution to conferencePaperpeer-review


Light-induced self-written (LISW) optical waveguide is advantageous to connect optical fiber with the waveguide. We introduce the fabrication of waveguide with mirrors by LISW optical waveguide technique and the application of the waveguide. Usually the cut-back method for measuring propagation loss of waveguides is applied, though, it requires repeating processes; cutting, polishing, and measuring. Because of these time consuming processes, simple process to measure the optical loss of the LISW optical waveguide is required. We investigated a new measurement method of propagation loss of the LISW optical waveguides, where branching mirror structure is introduced. We made LISW waveguide containing 4 partial reflection mirrors, and measured the optical power of reflected light. The propagation loss (0.47±0.12[dB/cm]) that was calculated from the reflected optical power agrees well with the value measured using the cut-back method (0.36±0.18[dB/cm]). The measurement time of the new method reduced to about one tenth than that by the cut-back method. We also propose a new method to fabricate serially grafted waveguide with active polymer using the LISW technique.

Original languageEnglish
Number of pages2
Publication statusPublished - 2005 Dec 1
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: 2005 Sep 202005 Sep 22


Other54th SPSJ Symposium on Macromolecules


  • Light-induced self-written waveguide
  • Photo polymerization
  • Propagation loss measurement method

ASJC Scopus subject areas

  • Engineering(all)


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