Johan Jason Email & Phone Number

Delsbo, Gävleborg County, Sweden

Mons, Belgium

Postdoctoral Researcher in Fibre-Optic Sensing at the Dept. of Electromagnetism & Telecommunications

Uppsala, Sweden

Sundsvall, Sweden

- Experimental and theoretical studies on coupling based intensity modulated fibre-optic sensors, including simulations in Matlab. Design and implementation of a temperature sensor system, monitored by an OTDR, for a process industry application.- Setup of a polarisation OTDR system using PC-based instrument control and data acquisition. - Experimental and theroretical work on the temperature characteristics of birefringence of filled side-hole fibres.- Polarisation analysis calculations using Matlab and experimental work involving OTDR and photon-counting OTDR techniques.

Hudiksvall, Sweden

- Characterisation of prototype OTDR systems and sensor cables.- Installation of ULRICA distributed heat detection systems. Development and installation of an industrial temperature sensor system.- Writing of course material for a course in optical fibre measurements with focus on OTDR measurements. Training and teaching.- Consultancy assignments in fibre-optic measurements and instrumentation, including measurements of attenuation, strain, time delay, chromatic dispersion and PMD.- Member of COST action TD1001,"Novel and Reliable Optical Fibre Sensor Systems for Future Safety and Security Applications".- Suggested, and was in the organising committee for, an OTDR Symposium held in Hudiksvall in november 2008.

Hudiksvall, Sweden

- Process development for optical fibre products such as ribbons and blown fibre units.- Implementation of process in present and new production machinery, type testing of blown fibre units.- Special meaurement missions on optical fibres, including a setup for testing of hydrogen-induced loss in various fibre types.

Hudiksvall, Sweden

- Practically responsible for optical fibre measurements. Studies of new measurement procedures like spectral modelling, and studies on PMD, skew and other parameters. Participation in international conferences on fibre-optic measurements and communications, also with own contributions.- Fibre measurement system maintenance and calibration, writing of test procedures and calibration routines. Leading of concept evaluation and introduction of setup for automatic OTDR measurements of high fiber count ribbon cables in delivery inspection.- Production support with solutions in measurements and instrumentation.- Marketing support with engineering expertise in customer related matters. Presentations on optical fibre transmission, technology and measurements. Training of customers in fibre-optics and measurements.- Teaching fibre-optics in a course at university level, and at lower levels, also involving laboratory exercises.

Phd, Electronics (Fibre-Optic Sensing)

Doctoral Thesis: "Fibre-Optic Displacement and Temperature Sensing Using Coupling Based Intensity Modulation and Polarisation Modulation.

Msc, Engineering Physics

Master Thesis: "Construction and testing of equipment using fluorescence for on-line monitoring of the distribution of recycled fibre.