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Applied Optics

Applied Optics


  • Vol. 33, Iss. 12 — Apr. 20, 1994
  • pp: 2307–2312

Low excess losses in a Y-branching plastic optical waveguide formed through injection molding

Yoshitaka Takezawa, Shin-ichi Akasaka, Shuichi Ohara, Takanobu Ishibashi, Hideki Asano, and Noriaki Taketani  »View Author Affiliations

Applied Optics, Vol. 33, Issue 12, pp. 2307-2312 (1994)

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We have demonstrated low excess losses (1.9 dB at 660-nm wavelength) in a Y-branching plastic optical waveguide (POWG) that was fabricated using an injection-molding method. The waveguide had an amorphous vinyl polymer as the core and transparent polyolefin as the cladding. We then studied a method for isolating the excess loss in the Y-branching POWG, and with that method we estimated the lower limit of the loss to be 1.41 dB at 660 nm. The sample had a heat-resistant plastic optical fiber (POF) with a core composed of crosslinked poly(methyl methacrylate) (PMMA) copolymer, and a cladding composed of poly(tetrafluoroethylene-co-hexafluoropropylene). The POWG has sufficient reliability for ordinary uses below 100 °C. A model for a bidirectional wavelength-division multiplexing optical-communication system with the developed Y-branching POWG and the POF was also demonstrated.

© 1994 Optical Society of America

Original Manuscript: April 5, 1993
Published: April 20, 1994

Yoshitaka Takezawa, Shin-ichi Akasaka, Shuichi Ohara, Takanobu Ishibashi, Hideki Asano, and Noriaki Taketani, "Low excess losses in a Y-branching plastic optical waveguide formed through injection molding," Appl. Opt. 33, 2307-2312 (1994)

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