Title :
Spot-size converter using vertical ridge taper for low fibre-coupling loss in 2.5%-Δ silica waveguides
Author :
Maru, K. ; Hakuta, T. ; Abe, Y. ; Ito, M. ; Himi, S. ; Uetsuka, H. ; Mizumoto, T.
Author_Institution :
Photonics R&D Center, Hitachi Cable Ltd., Japan
Abstract :
A novel spot-size converter based on a vertical ridge waveguide taper for super-high-Δ silica waveguides is demonstrated. This structure can be formed with a simple fabrication process. The coupling loss between a singlemode fibre and a 2.5%-Δ silica waveguide was reduced to 0.31 dB/point compared to 2.7 dB/point for conventional straight waveguides.
Keywords :
optical fibre losses; optical planar waveguides; ridge waveguides; low fibre-coupling loss; silica waveguides; singlemode fibre; spot-size converter; vertical ridge taper; waveguide taper;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20064182
