Supported by the National Natural Science Foundation of China(No.61107052);the National Natural Science Foundation of Tianjing(No.11JCYBJC00100)
In the traditional dual-frequency radar ranging system,there is a contradiction between ranging precision and ranging distance.So a tri-frequency ranging method is proposed.The principle of the tri-frequency ranging i...
supported by the Tianjin Natural Science Foundation(Nos.13JCQNJC01800 and 11JCYBJC00100)
A stable dual-wavelength erbium-doped fiber laser(EDFL) with tunable wavelength spacing and equalized output power is proposed and experimentally demonstrated. The fiber laser uses two fiber Fabry-Perot tunable filter...
supported by the Tianjin Natural Science Foundation (No.11JCYBJC00100 and 13JCQNJC01800)
A kind of fiber-optic sensor for simultaneous measurement of refractive index of surrounding medium, temperature and strain is described. Based on core diameter mismatch, a multimode-single mode-multimode (MSM) struct...