Phase precision of Mach–Zehnder interferometer in PM2.5 air pollution<xref rid="cpb_27_7_070304fn1" ref-type="fn">*</xref><fn id="cpb_27_7_070304fn1"> <label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant No. 61306131) and the Science Foundation of Shaanxi Provincial Department of Education, China (Grant No. 14JK1682).</p></fn>

Phase precision of Mach–Zehnder interferometer in PM2.5 air pollution* *

Project supported by the National Natural Science Foundation of China (Grant No. 61306131) and the Science Foundation of Shaanxi Provincial Department of Education, China (Grant No. 14JK1682).

Xie Duan, Chen Haifeng

Possible positions where PM2.5 fine particles can appear during the transmission.