Helical Fiber Interferometer Using Flame-Heated Treatment for Torsion Sensing Application

An interferometer using a single-mode fiber helix (SFH) was fabricated by the flame-heated treatment for torsion sensing application. For the first time to the best of our knowledge, this kind of interferometer was designed and experimentally demonstrated. By launching a linear polarized beam into the SFH, the interference was formed at the output of the structure because of the fiber bending-indu...