Practical method of waveguide-to-fiber connection: direct preparation of waveguide endface by cutting machine and reinforcement using ruby beads
Applied Optics, Vol. 29, Issue 34, pp. 5096-5102 (1990)
http://dx.doi.org/10.1364/AO.29.005096
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Abstract
We propose and demonstrate new practical methods of waveguide end fabrication and fiber attachment for Ti:LiNbO3 waveguides. We fabricated waveguide endfaces with a cutting machine, which simplifies the manufacture of waveguide devices and provides a low excess loss of 0.3 dB or less. Our proposed fiber attachment method features fibers that protrude slightly from the reinforcement. It provides easy alignment, low excess loss (<0.1 dB), high strength (>600 gf), and high thermal stability (-10 to 60°C). We also developed an easy way to reduce the backreflection from the joint without using anti-reflection coating. Instead, a tapered hemispherical end fiber and an angled waveguide endface are used. Backreflection is easily reduced to less than -30.
© 1990 Optical Society of America
Citation
N. Mekada, M. Seino, Y. Kubota, and H. Nakajima, "Practical method of waveguide-to-fiber connection: direct preparation of waveguide endface by cutting machine and reinforcement using ruby beads," Appl. Opt. 29, 5096-5102 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-34-5096
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