Designing a New Detection Scheme In Order To Improve Spatial Resolution of the OFDR-Based Distributed Optical Sensors

Distributed optical sensors use one of the three optical Reflectometry methods to measure their desired feature. This paper surveys Optical Frequency Domain Reflectometry (OFDR) method. A major part of the distributed sensor is its detection part which significantly affects the system's performance. There are four popular detection schemes two of which have been combined and simulated in a new detection scheme. Finally the effects of this new structure are presented for the improvement of the spatial resolution and noise reduction in sensing system.