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Applied Optics

Applied Optics


  • Vol. 45, Iss. 1 — Jan. 1, 2006
  • pp: 22–26

Free-space-wave drop demultiplexing waveguide device fabricated by use of the interference exposure method

Shogo Ura, Mei Hamada, Junpei Ohmori, Kenzo Nishio, and Kenji Kintaka  »View Author Affiliations

Applied Optics, Vol. 45, Issue 1, pp. 22-26 (2006)

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Integration of free-space-wave add–drop multiplexers that consist of focusing grating couplers (FGCs) and distributed Bragg reflectors (DBRs) in thin-film waveguides have been investigated for construction of an intraboard wavelength-division-multiplexing optical interconnection. Compact optics of a Lloyd mirror configuration and a contact-type mask aligner were combined as an interference exposure system for fabrication of DBRs of 300 μm coupling length. DBRs were integrated with FGCs on a thin-film waveguide on a glass substrate for two-channel wavelength-drop demultiplexing from guided waves to free-space waves. Measured outcoupled wavelengths of two free-space waves from two pairs of a FGC and a DBR agreed with the design values of 845 and 849 nm .

© 2005 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
(200.4650) Optics in computing : Optical interconnects
(230.7370) Optical devices : Waveguides

Shogo Ura, Mei Hamada, Junpei Ohmori, Kenzo Nishio, and Kenji Kintaka, "Free-space-wave drop demultiplexing waveguide device fabricated by use of the interference exposure method," Appl. Opt. 45, 22-26 (2006)

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