Fiber Strain Measurement for Wide Region Quasidistributed Sensing by Optical Correlation Sensor with Region Separation Techniques

<table>Experimental setup of pulse correlation and differential technique with wavelength sensing region separation. ML-FL: Mode-Locked Fiber Laser; SH: Second Harmonic; SSR: Strain Sensing Region.</table>

Journal of Sensors

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Figure 6

Figure 6: Fiber Strain Measurement for Wide Region Quasidistributed Sensing by Optical Correlation Sensor with Region Separation Techniques 