An Yb-fiber frequency comb phase-locked to microwave standard and optical reference<xref rid="cpb_29_3_030601fn1" ref-type="fn">*</xref><fn id="cpb_29_3_030601fn1"><label>*</label><p>Project supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos. XDA1502040404 and XDB21010400) and the National Natural Science Foundation of China (Grant Nos. 91850209 and 11774234).</p></fn>

An Yb-fiber frequency comb phase-locked to microwave standard and optical reference**

Project supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant Nos. XDA1502040404 and XDB21010400) and the National Natural Science Foundation of China (Grant Nos. 91850209 and 11774234).

Wang Hui-Bo^{1, 2}, Han Hai-Nian^{2, 3, †}, Zhang Zi-Yue^{2, 3}, Shao Xiao-Dong^{2, 3}, Zhu Jiang-Feng¹, Wei Zhi-Yi^{1, 2, 3}

Schematic of the experimental setup. SMLD, single-mode laser diode; WDM, wavelength division multiplexer; HWP, half waveplate; QWP, quarter waveplate; ISO, isolator; EOM, electro-optic modulators; PZT, piezoelectric transducer; SMF, single mode fiber; DCF: double cladding fiber; PCF, photonic crystal fiber; PBS, polarization beam splitter; DDL, dispersion delay line; APD, avalanche photodetector.