Radiation-Balanced Silica Fiber Amplifier

Bismuth-doped Silica Fiber Amplifier

To accommodate rapidly increasing quantities of information and communication, optical fiber transmission technology with high-speed high-capacity is demanded. The development of an optical gain medium and fiber amplifiers to cover the 1250~1650 nm region, which is the entire optical telecommunication windows of silica fiber, becomes an important issue for ultra-wide broadband optical communica...

Radiation Effects Expected for Fiber Laser/Amplifier Rare Earth Doped Optical Fiber

1.0 Introduction Fiber lasers are still considered an emerging technology because at the system level there exists no harsh environmental qualification data that is available to the public. Some vendors such as IPG claim to have thermal and vibration data on their units but NASA still needs to conduct validation analysis and testing to insure the technology will function as expected under harsh...

Mode-Filtered Fiber Amplifier

Radiation Effect in Silica Optical Fiber Exposed to Intense Mixed Neutron–Gamma Radiation Field

We measured in situ the radiation-induced absorption of pure silica core fibers exposed to a fission nuclear reactor. We observed the growth of the 1.39m OH vibration band in polymer coated fiber. Three mechanisms are responsible for this effect: recoil protons, hydrogen diffusion, and a probable compaction effect. Based on this experiment, a fiber-optic neutron monitor prototype is proposed.

Extreme Short Wavelength Operation (1.65 – 1.7 μm) of Silica-Based Thulium-Doped Fiber Amplifier

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