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The fabrication of few-mode Cr-doped double-clad crystalline fiber (FMCDCF) using a multiple core tuning process is demonstrated for the first time. The FMCDCF exhibited a core diameter of 2 ± 0.6 μm and a V-value of 3.77 to ensure the few-mode characteristics.
The fabrication of Cr-doped fibers (CDFs) using fiber drawing-tower combined with non-silica powder-in-tube (PIT) technique to achieve the active application of chromium ions in fiber is demonstrated for the first time. The fluorescence enhancement, transmission loss, and few-mode operation are discussed in the paper. The success in fabrication of CDFs with PIT method may open the possibility for...
The reduction of the number of modes existed in fiber is the key to enable a high performance fiber laser and fiber amplifier. In this study, we are attempting to fabricate few-mode dual-clad crystal fibers.
The fabrication of broadband single-mode Cr-doped silica fibers (SMCDSFs) using the fiber drawing-tower method with the modified rod-in-tube technique is demonstrated for the first time. A single-mode characteristic of SMCDSF was observed when the propagation wavelengths were longer than 1310 nm. The transmission loss was about 8 dB/m at 1550 nm. The successful fabrication of SMCDSFs may facilitate...
The fabrication of ultra-broadband singlemode Cr-doped fibers (SMCDFs) using fiber drawing-tower method is demonstrated for the first time. The success in fabrication of SMCDFs may open the possibility for utilizing SMCDFs as ultra-broadband fiber amplifiers.
Nano-crystalline Cr-doped-fibers (CDFs) fabricated by drawing tower are reported. The result indicates the proposed technique has the potential of fabricating a uniform distribution of nano-crystals embedded CDF with crystal-like active properties in a long fiber.
The characteristics of ultra-broadband Cr-doped fibers employing drawing-tower-method are reported. The Cr-doped fiber shows a longer fluorescence lifetime and 1.2-1.55 mum broadband emission. This Cr-doped fiber may be used as a new broadband fiber amplifier.
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