1. R.L. Jungerman et al., High speed optical modulator for application in instrumentation. J. Lightwave Technol. 8, 1363–1370 (1990)
2. R. Madabhushi, A study of an antenna coupled optical Y branch and its application, Doctorate thesis for Doctor of Electronics Engineering, Tohoku University, Sendai, Japan, (1989)
3. K. Kawano, T. Nozawa, M. Yanagibashi, H. Jumoji, Broad band and low driving power LiNbO3 external optical modulators. NTT Rev. 1, 103–113 (1989)
4. K. Kawano, T. Kitoh, H. Junmoji, T. Nozawa, M. Yanagibashi, New traveling wave electrode Mach-Zehnder optical modulator with 20 GHz bandwidth and 4.7 V driving voltage at 1.52 μm wavelength. Electron. Lett. 25, 1382–1383 (1989)
5. M. Seino, N. Mekada, T. Namiki, and H. Nakajima, 33-GHz-cm broadband Ti: LiNbO3 Mach-Zehnder modulator, in Proc. ECOC, Paper ThB22–5. (1989), pp. 433–435