  We demonstrate a 0.95 GHz repetition rate fully stabilized Yb:fiber frequency
comb without optical amplification. Benefitted from the high mode power and
high coherence, this comb achieved 35 dB to 42 dB signal to noise ratio on the
direct heterodyne beat signals with at least 6 continuous wave lasers (at
580nm, 679nm, 698nm, 707nm, 813nm and 922 nm) while keeping >40 dB carrier
envelop frequency signal. It can be used for the direct measurement of optical
frequencies in visible and near-infrared wavelengths, and has a great potential
on simultaneous comparison of multiple optical frequencies.
