title: Fiber-tip micro-cavity for temperature and transverse load sensing.
abstract: A low cost fiber-optic micro-cavity interferometric sensor is presented. The micro-cavity is fabricated at the fiber tip by splicing a silica capillary to a single mode fiber and then heating/melting the capillary to form a microsphere with an internal air cavity. Applications of the micro-cavity sensor for temperature and traverse load measurements are demonstrated. The sensor has small size and good mechanical strength, and may be used in high temperature environment.
authors.affiliation: Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
authors.forename: Jian
authors.initials: J
authors.lastname: Ju
authors.forename: Long
authors.initials: L
authors.lastname: Jin
authors.forename: Wei
authors.initials: W
authors.lastname: Jin
authors.forename: Dongning
authors.initials: D
authors.lastname: Wang
mesh_terms: D000388:Air; D004566:Electrodes; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000379:methods*; D007368:Interferometry / Q000379:methods*; D008962:Models, Theoretical; D012822:Silicon Dioxide / Q000737:chemistry; D013314:Stress, Mechanical; D013696:Temperature; D016474:Weight-Bearing
chemical_list: D012822:Silicon Dioxide