[14p-2D-1~19] 4.4 Opto-electronics

▲ [14p-2D-14] Simultaneous measurement of twist and transverse-stress through a dual-mode fiber assisted Sagnac Interferometer

〇(D)Saba Khan¹, Sudip Chatterjee¹, Partha Roy Chaudhuri¹ (1.Indian Institute of Technology Kharagpur)

Keywords:Optical fiber,Sagnac Interferometer,Twist

We report an experimental method to vary the transmission through a Sagnac interferometer (SI) employed with elasto-optically induced linear and circular birefringence(s). We also demonstrate simultaneous measurement of transverse stress and twist through a rugged, low cost, compact fiber optic interferrometric configuration operating over a wide dynamic range. It is observed that an ideal transmission characteristic can be achieved by suitably configuring the combination of dual-mode fiber placed in the loop, applied transverse stress and twist.