Fabrication of an integrated optical filter using a large-core multimode waveguide vertically coupled to a single-mode waveguide | Zendy

Min-Suk Kwon | Zendy; KiHong Kim | Zendy; Young-Hoon Oh | Zendy; Sang-Yung Shin | Zendy

Open Access

Fabrication of an integrated optical filter using a large-core multimode waveguide vertically coupled to a single-mode waveguide

Author(s) -

Min-Suk Kwon,

KiHong Kim,

Young-Hoon Oh,

Sang-Yung Shin

Publication year - 2003

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.11.002211

Subject(s) - optics , waveguide , multi mode optical fiber , materials science , cladding (metalworking) , grating , radiation mode , attenuation , single mode optical fiber , cladding mode , optoelectronics , wavelength , optical fiber , physics , polarization maintaining optical fiber , fiber optic sensor , metallurgy

We demonstrate the feasibility of the process for fabricating a single-mode waveguide and a large-core multimode waveguide aligned vertically on the same substrate. Using this process, we propose and demonstrate a filter that drops optical signal propagating in a single-mode waveguide to a multimode waveguide in the specific wavelength interval by a long-period grating. We use perfluorocyclobutane and benzocyclobutane for the cladding and core of the single-mode waveguide, respectively. The large core of the multimode waveguide is made of Norland Optical Adhesive 61. For the grating period of 315.9 um, the fabricated filter has the center wavelength of 1537.7 nm, at which the maximum attenuation is 17.8 dB.

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