1. University of Calcutta, Department of Applied Optics and Photonics, JD-2, Sector-III, Salt Lake, Kolkata-700 098, IndiabInstitute of Engineering and Management, Department of Electronics and Communication Engineering, Y-12, Sector-V, Salt Lake, Kolkata-700 091, India
2. Institute of Engineering and Management, Department of Electronics and Communication Engineering, Y-12, Sector-V, Salt Lake, Kolkata-700 091, India
3. University of Calcutta, Department of Applied Optics and Photonics, JD-2, Sector-III, Salt Lake, Kolkata-700 098, India