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physics.optics2020
Simultaneous existence of ultra-high and ultra-low spectral sensitivity for Directional Couplers
Garima Bawa, Indrajeet Kumar, Saurabh Mani Tripathi
We present the experimental evidence for the existence of two exciting wavelengths, termed critical and cross-over wavelength in the transmission spectrum of fiber-optic directiona…
physics.optics2020
Ultra-high Sensitive Surface Plasmon Resonance Based Sensor with Dual Resonance
Indrajeet Kumar, Ranjeet Dwivedi, Saurabh Mani Tripathi
We show that for the optimized angle of incidence, the SPR based optical sensors exhibit dual resonance in the near-infrared region around which the sensor becomes exceptionally hi…