Dr. S. Venkateswara Rao, S. Srinivasulu. 2021. “Versatility of U-Shaped Glass Optical Fiber Refractive Index Sensor Working at Multiple Wavelengths and at the Dynamic Range of Temperatures Between 10oC to 60oC”. Design Engineering, December, 4407 -16. http://www.thedesignengineering.com/index.php/DE/article/view/7467.