Crystalline Fibers and Their Applications
A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".
Deadline for manuscript submissions: closed (15 August 2021) | Viewed by 8036
Special Issue Editors
Interests: crystalline fibers; lasers; nonlinear optical frequency conversions; fiber optical sensing
Special Issue Information
Crystalline fibers, referring to those fibers with crystalline core structures, represent a rapidly progressing field of specialty fiber optics and applications. This special kind of fiber includes single-crystal fibers (SCFs) fabricated from micro-pulling down (MPD) and laser-heated pedestal growth (LHPG) techniques in addition to crystal-derived fibers (CDFs) made from rod-in-tube (RIT) and melt-in-tube (MIT) methods.
Crystalline fibers are supposed to possess the merits of being both crystals and of having a long-thin type shape. Compared with glass, crystals allow higher rare-earth doped concentrations and show higher melting points, thermal conductivity, and laser-induced damage thresholds. Benefiting from their long-thin-type shape, crystalline fibers exhibit waveguiding properties. For SCFs, laser and sensing applications have been widely reported. For example, over 250 W of continuous wave laser output has been realized with Yb:YAG SCF. Fiber sensing with temperature range of over 1500 °C has been realized with sapphire SCF. With CDFs, increasingly more researchers are focusing on their applications in single-frequency fiber laser and fiber sensing. For example, 255 mW of single-frequency laser has been reported with Yb:YAG-derived silica fiber. Fiber sensing with temperatures of as high as 1000 °C has been realized with sapphire-derived silica fiber.
Although crystalline fibers have shown great potential theoretically and experimentally, there many problems remain in both fiber fabrication and application. For example, how can we fabricate 4C (crystal core and crystal-clad) fibers, especially double-clad crystal fibers? Besides silica, is there any other glass suitable for the cladding of YAG crystal-derived fibers? The list goes on.
We invite scientists to submit papers which discuss their latest results concerning crystalline fiber fabrication and characterization (structure and quality, optical and physical properties) and their applications in lasers, optical sensors, nonlinear photonics, integrating photonics, scintillation detection, etc.
Prof. Zhaojun Liu
Prof. Zhixu Jia
Guest Editors
Manuscript Submission Information
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Keywords
- Single-crystal fibers (SCFs)
- Crystal-derived fibers (CDFs)
- Crystal–glass hybrid fibers
- Semiconductor–glass hybrid fibers
- Ceramic–glass hybrid fibers
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