Optical Frequency Synthesis From a Cryogenic Sapphire Oscillator Using a Fiber-Based Frequency Comb. - Ken-ichi Watabe; Hajime Inaba; Ken'ichiro Okumura; Feng-Lei Hong; John G. Hartnett; Clayton R. Locke; Giorgio Santarelli; Shinya Yanagimachi; Kaoru Minoshima; Takeshi Ikegami; Atsushi Onae; Shin-ichi Ohshima; et al. (IEEE Trans. Instrum. Meas., 2007)