“…The fine tuning of the sputtering condition (power, current, vacuum pressure, gas flow rate, etc.) allows one to have excellent control over the thickness of the deposited films, making sputtering a useful tool for depositing coatings on optical fibers [2]- [5]. In fact, sputtering has been used to fabricate nano-Fabry-Perot interferometers on the end facet of optical fibers in order to develop devices for different sensing Manuscript submitted September 27, 2016.…”