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. Author manuscript; available in PMC: 2011 Mar 16.
Published in final edited form as: IEEE Photonics Technol Lett. 2010 Jul 12;22(15):1147–1149. doi: 10.1109/LPT.2010.2051145

Fig. 1.

Fig. 1

ARROW hollow waveguide designs: (a) First design on a planar substrate. (b) Second design on a pre-etched substrate. (Light gray: SiO2; dark gray: SiN).