Strain sensor based on LP01-LP02 intermodal interference in highly birefringent optical fibers

Wojtek J. Bock; Tinko A. Eftimov

doi:10.1117/12.169951

9 March 1994 Strain sensor based on LP₀₁-LP₀₂ intermodal interference in highly birefringent optical fibers

Wojtek J. Bock, Tinko A. Eftimov

Proceedings Volume 2070, Fiber Optic and Laser Sensors XI; (1994) https://doi.org/10.1117/12.169951
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

LP₀₁-LP₀₂ intermodal interference in highly birefringent (Hi-Bi) elliptical jacket and bow-tie optical fibers was studied experimentally. The response of the interferometer to strain was measured for different polarization inputs. The experiments are shown to agree with a previous theoretical investigation of LP₀₁-LP₀₂ intermodal polarization interference. The modal distributions of the interfering modes are found to be different in elliptical-core and in bow-tie fibers. Comparison with the LP₀₁-LP₁₁ interferometric response is presented. Optimum detection schemes are suggested to extract maximum information from the strain-modulated sensor signal.

Citation Download Citation

Wojtek J. Bock and Tinko A. Eftimov "Strain sensor based on LP₀₁-LP₀₂ intermodal interference in highly birefringent optical fibers", Proc. SPIE 2070, Fiber Optic and Laser Sensors XI, (9 March 1994); https://doi.org/10.1117/12.169951

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