Partridge, MatthewJames, Stephen W.Tatam, Ralph P.2016-08-252016-08-252016-08-01Matthew Partridge, Stephen James and Ralph Tatam. Dissolved oxygen sensing using an optical fibre long period grating coated with hemoglobin. Journal of Lightwave Technology, Vol. 34, NO. 19, October 2016, pp4506-45100733-8724http://doi.org/10.1109/JLT.2016.2533161https://dspace.lib.cranfield.ac.uk/handle/1826/10452A long period grating fiber optic sensor coated with hemoglobin is used to detect dissolved oxygen. The sensitivity of this sensor to the ratio of dissolved carbon dioxide to dissolved oxygen is demonstrated via the conversion of carboxyhemoglobin to oxyhemoglobin on the sensor surface. The sensor shows good repeatability with a %CV of less than 1% for carboxyhemoglobin and oxyhemoglobin states with no measurable drift or hysteresis.enHemoglobinHaemoglobinLong period gratingFiber opticsoxygen, dissolved gasdissolved oxygensensingArticle