The Basic Principle and Applications on Medical of Fiber Optic Sensors

Objective: This article simply introduced the basic principle of fiber optic sensor and its application especially on medical in blood pressure,the speed of flow,the pH value etc.Method: The fiber optic sensor basic principle is the light which sends out the photo source sends in after the fiber optic the modulation area,in the modulation area,the outside was measured the parameter with enters the modulation area the light to affect mutually,causes the light the intensity,the frequency,the phase,the polarization to occur changes into the signal light which modulates,again passes through the fiber optic to send in the light detector,the demodulator obtains is measured the physical quantity.The fiber optic sensor may divide into two kinds according to its sensing principle: one kind is the light-passing sensor;the other is the sensing sensor.Result: At present,the main application in the medicine is the light-passing fiber optic sensor.The main advantages of fiber optic sensor are: exquisite,insulation,not influenced by the radio frequency and the microwave.The measuring accuracy is high.The image transmission in medical is the special part of the application on the transmission modes fiber optic sensor.Only tie a plenty of fiber optic to composition fiber optics,we could make the sensor which can cause the image space quantization effectively.After introduced the fiber optic in to the endoscope,the endoscope application scope has widened.The fiber optic is soft,more freedom,the transmission image is low distortion,and the diameter is thin.All the advantages above making each kind of endoscopies human body each spot are feasible,and cannot cause patient's pain and uncomfortable in the operation.Fiber optic blood vessel mirror has applied in humanity's cardiac catheterization inspection.When carries on the laser blood vessel forming operations,the blood vessel mirror may provide much important information.which could guide the direction of the laser radiation,choose laser's energy and the duration,and may understand the treatment result after the formed operation.Not only the fiber optic endoscope uses in diagnosing,but also is entering in the treatment domain,for example uses in undergoing the polyp excision surgery and so on.The microwave warming treatment technology is the effective way to treat cancer currently,but the temperature of the microwave warming technology is hard to control,The fiber optic temperature sensor may carry on the effective temperature of the microwave warming which treat cancer exactly.Thus make the temperature not too high to kill the normal cell in human body,also not too low to achieve the treatment goal which could cause enable the cancer cell further proliferation.The research and the development the fiber optic temperature sensor treats the aspect at cancer is emerging day by day.Conclusion: The fiber optic sensor obtains the widen application in the medicine as a superiority new sensor;provide one brand-new method in disease treatment.Along with the manufacture technology mature and the component performance unceasing enhancement,the fiber optic sensor will certainly to be able further to impel the medicine the rapid development in the near future.