15:45 〜 16:00 ▲ [16p-C301-8] Selectively Excited Higher Order Mode in a Chemically Etched Few-Mode Fiber for High Relative Humidity Measurement 〇(DC)Saba Nashreen Khan1、Sudip Kumar Chatterjee1、Partha Roy Chaudhuri1 (1.IIT Kharagpur)