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 dB.
© 1990 Optical Society of America
Full Article | PDF ArticleOSA Recommended Articles
Tadashi Ichikawa, Manabu Kagami, and Hiroshi Ito
Opt. Lett. 23(14) 1138-1140 (1998)
Ryo Takigawa, Eiji Higurashi, Tetsuya Kawanishi, and Tanemasa Asano
Opt. Express 22(22) 27733-27738 (2014)
Sang-Shin Lee, Sean Garner, William H. Steier, and Sang-Yung Shin
Appl. Opt. 38(3) 530-533 (1999)