The concept of topology is well known in mathematical sciences. Recently, the material scientists have used it to fabricate topological metamaterials, such as topological photonic crystals. In this study one dimensional topological photonic crystal heterostructure have been designed numerically. It shows the topological protected multiple resonant modes. At the interface of two photonic crystals, the topological edge states occur, and with the addition of third photonic crystal it induces the effect of rainbow trapping. The effect of temperature tuning may also be introduced with a modification in its design, which can be used to fabricate a sensor.
Akhilesh Tiwari is working as Associate Professor of Physics at Department of Applied Sciences, IIIT Allahabad, Prayagraj. He achieved two Ph D degrees, one in Physics from India and another one is in Process Engineering from University of Clermont-Ferrand, France. He has experience in the field of research and teaching for more than 21 years. He has published and presented more than 100 scientific papers in his credit at different National and International platforms. In his research studies, he worked on modeling and simulation of photonic crystals, quantum optics and informatics, space studies for life support system. Also, he has a broad experience in working with the French Space Agency and European space agency for data analytics and experimental modeling and simulation. He is a very active member of several International and national scientific bodies such as IEEE, IAPT, BRSI, PSI, and AIAAA etc.
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