ifos • paper_1 • waves_oscillations
[UPSC IFoS 2012] Polarisation and Modern Optics (Q395, 10M)
An optical waveguide has core and cladding of refractive indices 1\cdot 46 and 1\cdot 45 respectively. (i) Calculate the maximum number of modes with wavelength \lambda = 900\text{ nm} that can travel if it is a planar waveguide of core thickness 10\ \mu\text{m}. (ii) What is the number of modes if it is a cylindrical fiber of diameter 10\ \mu\text{m} ?
Discussion (0)
Sign in to post a solution, derivation, or discussion.
No comments yet. Start the conversation!