We report on high power amplification of femtosecond pulses in 40-μm core diameter Yb-doped photonic bandgap Bragg fibers. The robustness to bending and transverse spatial behavior of these fibers is analyzed through simulations. The fibers are used in both stages of a moderately stretched (150 ps) femtosecond chirped pulsed amplification (CPA) system. A compressed average power of 6.3 W is obt...

An all-fiber curvature laser sensor by using a novel modal interference in-fiber structure is proposed and experimentally demonstrated. The in-fiber device, fabricated by fusion splicing of multimode fiber and double-clad fiber segments, is used as wavelength filter as well as the sensing element. By including a multimode fiber in an ordinary modal interference structure based on a double-clad ...

Germania glass was prepared from high purity GeO2 powder. Refractive-index dispersion was used to calculate material dispersion and to provide a model for representing the dispersion of GeO2-SiO2 glasses. The wavelength of zero material dispersion is found to be in agreement with theoretical calculations. Modal propagation is modeled for a GeO2 core-silica clad fiber. Results support compositio...

We report on the fabrication and properties of 850 nm wavelength AlGaAs–GaAs-based transceiver chips, in which vertical-cavity surface-emitting lasers (VCSELs) and metal– semiconductor–metal (MSM) photodiodes are monolithically integrated. Various types of devices allow halfand full-duplex bidirectional optical interconnection at up to 2.5Gbit/s data rate using butt-coupled glass or polymer-cla...

Introduction: Cladding-pumped rare-earth-doped fibers and Raman fiber devices have been two of the most compelling advances in the area of fiber amplifiers and lasers in recent years. Both cladding-pumped fibers and Raman fiber devices are primarily high-power devices. Cladding-pumping enables pumping with multi-mode pump sources that deliver high-power at a low cost. The core of the double-cla...

We present a detailed description of the design, construction, and performance of high-power ultrafast Yb:fiber laser frequency combs in operation in our laboratory. We discuss two such laser systems: an 87 MHz, 9 W, 85 fs laser operating at 1060 nm and an 87 MHz, 80 W, 155 fs laser operating at 1035 nm. Both are constructed using low-cost, commercially available components, and can be assemble...

A novel extension to the molten core method was employed realize a glass-clad, crystalline gallium arsenide (GaAs) fiber for first time author’s knowledge. GaAs is of considerable interest its optoelectronic and nonlinear properties, but decomposition volatility, usually leading incongruent solidification, normally preclude melt-processing under ambient conditions into an optical fiber. Present...

Advancements in fabrication of miniaturized optical scanners would benefit from micrometer sized fiber tips. The change the cross section an tip is often accompanied with presence a longer tapered area. reduction double clad fibers (DCFs) flat interface surface at region where takes place (with abrupt section) considered this paper. Various methods such as heating and pulling, wet etching using...

This work establishes computational analysis of relative refractive index property for light transmission via fiber optics using MATLAB simulation. Optical is a dielectric wave guide which transmits signal with low attenuation and dispersion at higher bandwidth or data rate. Recent advances in introduced largely new dimension into optical technology the effect improving through application clad...