Important thermoluminescence (TL) properties of five (5) different core sizes Ge-doped optical fibers have been studied to develop new TL material with better response. These are drawn from same preform applying different speed and tension during drawing phase to produce Ge-doped optical fibers with five (5) different core sizes. The results of the investigations are also compared with most com...

This thesis contains the results of research in the fields of spectral control, efficiency and lifetime of high-power, rare-earth doped fiber lasers, properties which are of great importance for scientific and industrial applications. Volume Bragg gratings (VBGs) has for the first time been used together with fiber lasers and the laser performance in terms of spectral purity, thermal stability,...

Resonance properties of the all-fiber ring cavity filled with nonlinear material - saturable rare-earth-doped fiber are analyzed and experimentally investigated. Unlike earlier investigated erbium-doped at 1550nm where optical absorption photo-induced change (saturation) is observed only, ytterbium-doped 1064nm demonstrates saturation refractive index mainly. For this configuration we report ex...

Group-velocity dispersion of birefringent GeAsSe tapered PCF is directly measured over 1900-2300nm range using all-fiber Mach-Zehnder interferometer. We experimentally prove that zero-dispersion wavelength of chalcogenide PCFs can be shifted to thulium/holmium doped silica emission band. OCIS codes: (060.2270) Fiber characterization; (260.2030) Dispersion; (060.2390) Fiber optics, infrared

A core-clad fiber made of elastic, tough hydrogels is highly stretchable while guiding light. Fluorescent dyes are easily doped into the hydrogel fiber by diffusion. When stretched, the transmission spectrum of the fiber is altered, enabling the strain to be measured and also its location.

We demonstrate a transmission of 8×256 Gb/s WDM 64 Gbaud QPSK signals over 2880 km of standard single mode fiber (SSMF) with erbium doped fiber amplifier (EDFA)-only amplification and coherent detection. OCIS codes: (060.1660) Coherent communications; (060.2330) Fiber optics communications; (060.4080) Modulation.

Fiber loss is a fundamental limitation in realizing long haul point to point fiber optical communication links and optical network. One of the advance technology in the recent year is the advent of ERBIUM DOPED FIBER AMPLIFIER. It is essential element in DWDM .In this paper gain and performance analysis of EDFA has been studied.

A wideband tunable fiber ring lasers using 253.3-cm long La-codoped bismuth-based erbium doped fiber and a narrowband tunable MEMS filter are reported. The fiber ring laser is capable of tuning over 80 nm continuously from 1545 to 1625 nm with an average output power of -3 dBm and extinction ratio of 60 dB.

We report the first demonstration of silica-based thulium-doped fiber amplifier (TDFA) working in the 1.65 – 1.7 μm waveband. Up to 29 dB small signal gain and noise figure as low as 6.5 dB are achieved. OCIS codes: (060.2320) Fiber optics amplifiers and oscillators; (060.2330) Fiber optics communications

*Correspondence: Guoping Dong and Jianrong Qiu, State Key Laboratory of Luminescent Materials and Device, School of Materials Science and Engineering, South China University of Technology, Wushan Road 381, Tianhe District, Guangzhou, Guangzhou 510640, China e-mail: [email protected]; [email protected] Quantum dot (QD)-doped glasses have been the hotspot for their excellent electronic and optical pr...