N. F. Noori and T. S. Mansoor, “Experimental Study to The Effect of Applying Stressing Force on Etched Polarization Maintaining Fiber as Hybrid Fabry-Perot /Mach-Zehnder inline fiber interferometer ”, IJL, vol. 20, no. 2, pp. 24–31, Dec. 2021, doi: 10.31900/ijl.v20i2.283.