7 October 2014 Er3+/Yb3+ co-doped all-fiber Mach-Zehnder interferometer for 1550nm applications
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In this work an Er3+/Yb3+ co-doped all-fiber Mach-Zehnder interferometer that could be suitable for telecomm channel selection, temperature sensing or torsion sensing applications is proposed. The experimental array consists of a 980nm pump laser diode at 350mW output power, a 30cm co-doped fiber segment from our own design, and a mechanicallyinduced long period fiber grating in cascade with a tapered section, both on the co-doped fiber. The experimental results show an ASE operation bandwidth spectrum from 1450nm to 1650nm. The resulting interference pattern line-width is around 10nm with a 0.5dBm depth. The theoretical model based on Einsteins rate equations, along with the LPG inhouse fabrication method, and full experimental results are explained.
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G. Pérez-Sánchez, G. Pérez-Sánchez, E. F. Pinzón-Escobar, E. F. Pinzón-Escobar, G. E. Sandoval-Romero, G. E. Sandoval-Romero, J. A. Álvarez-Chávez, J. A. Álvarez-Chávez, "Er3+/Yb3+ co-doped all-fiber Mach-Zehnder interferometer for 1550nm applications", Proc. SPIE 9220, Infrared Sensors, Devices, and Applications IV, 92200P (7 October 2014); doi: 10.1117/12.2062542; https://doi.org/10.1117/12.2062542

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