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8 March 2019 Enhancement of wavefront characteristics in fibers by Anderson localized modes (Conference Presentation)
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Proceedings Volume 10935, Complex Light and Optical Forces XIII; 109350G (2019)
Event: SPIE OPTO, 2019, San Francisco, California, United States
Transverse Anderson Localizing Optical Fiber (TALOF) provides a novel waveguiding mechanism. The entire disordered transverse structure of the fiber supports compactly located Anderson localized modes. Each transversely localized mode of the fiber forms a guiding channel. The strong disorder-induced transverse confinement due to the Anderson localization suffices for single-mode light transmission. In this work, we analyze the beam quality of highly localized modes in a glass-TALOF. We use the M^2 factor as a broadly accepted metric in optical fiber community for the beam quality evaluation. A numerical analysis of the M^2 values on a large ensemble of calculated modes in a glass-TALOF hints to the presence of high-quality modes at various locations across the transverse profile of the fiber. Our experimental results on the statistics of M^2 values in glass-TALOF supports the numerical analysis where it is shown that high-quality modes can be easily excited across the entire transverse profile of the fiber. Specifically, we present M^2 values of 30 localized modes and show how the M^2 ~ 1 modes are dominant. When the gain is added to TALOF, it can support localized lasing modes. Recently, we have demonstrated a directional and spectrally stable random laser mediated by a glass-TALOF; localization of the lasing modes reduces mode competition and helps with the spectral stability. The disorder-induced high-quality wavefronts in TALOF in combination with the aforementioned advances in lasing mediated by TALOF can foster a new class of single-mode optical fiber laser.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Behnam Abaie, Mostafa Peysokhan, Jian Zhao, Jose E. Antonio-Lopez, Rodrigo Amezcua-Correa, Axel Schülzgen, and Arash Mafi "Enhancement of wavefront characteristics in fibers by Anderson localized modes (Conference Presentation)", Proc. SPIE 10935, Complex Light and Optical Forces XIII, 109350G (8 March 2019);

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