This paper presents a high-speed high-resolution low-finesse Fabry-Perot sensor interrogation system. The system utilizes a standard telecommunication distributed-feedback laser diode and an all-digital high-speed signal processing based on field-programmable-gate-array. The system can resolve multiple Fabry-Perot Interferometers (FPI) simultaneously, which might Read More …
Kategorija: Raziskovalno delo
An all-fiber scanning interferometer with a large optical path length difference
This paper describes the design of an all-fiber scanning interferometer. The main component of the system is a thermoelectric cooler that can rapidly heat or cool several meters of optical fiber. Over 4 cm variation of optical path length is Read More …
High-resolution spectrally-resolved fiber optic sensor interrogation system based on a standard DWDM laser module
This paper presents a spectrally-resolved integration system suitable for the reading of Bragg grating, all-fiber Fabry-Perot, and similar spectrally-resolved fiber-optic sensors. This system is based on a standard telecommunication dense wavelength division multiplexing transmission module that contains a distributed feedback Read More …
Rapid and broad wavelength sweeping of standard telecommunication distributed feedback laser diode
This Letter presents a method for the fast and broad wavelength sweeping of a standard setup of a diode’s active region and its immediate vicinity, which contain the diode’s optical feedback system. The selective and rapid heating of the active Read More …
All-optical, all-fiber, thermal conductivity sensor for identificationand characterization of fluids
This paper presents a miniature, all-optical, thermal conductivity fiber-optic sensor, which can be applied to various fluid composition identification situations. The sensor is composed of a short section of highly absorbing fiber, which is configured as a Fabry-Perot interferometer. A Read More …
In-line higher order mode filters based on long highly uniform fiber tapers
This paper presents a simple and effective design of taper-based higher order mode (HOM) filters that can effectively remove HOMs from the few-mode fibers. For this purpose, a taper manufacturing technique that allows the production of long and highly uniform Read More …
All-fiber micromachined microcell
This Letter presents an open-path, all-fiber microcell and a micromachining method for its production. The proposed micromachining method utilizes the selective etching of a purposely designed phosphorus-doped fiber that is spliced in between two standard lead-in fibers. Microcells with various Read More …
Optical fiber for dispersion addressing
This letter presents a fully distributed forward propagating system, suitable for use with microbend sensors. The principle relies on selected mode launch in specially designed multimode fiber where a short pulse is launched into the fundamental mode. In the presence Read More …
Opportunities to Enhance Multimode Fiber Links by Application of Overfilled Launch
This paper investigates possibilities for the practical design of high-performance multimode fibers (MMFs) that can provide bandwidths in excess of 10 GHz …km in an overfilled regime of operation. Analysis of standard MMF in an overfilled launch demonstrates that the Read More …
All-optical, thermo-optical path length modulation based on the vanadium-doped fibers
This paper presents an all-fiber, fully-optically controlled, optical-path length modulator based on highly absorbing optical fiber. The modulator utilizes a high-power 980 nm pump diode and a short section of vanadium-co-doped single mode fiber that is heated through absorption and Read More …