About Book
Photonics and optics have emerged as key fields in nano-scale device development, particularly in creating compact and efficient optical sensors for photonic integrated circuits (PICs). These sensors are highly valued for their low power consumption, compactness, precision, and rapid response, making them suitable for applications in industrial automation, environmental monitoring, defense, and medical diagnostics. However, miniaturization often increases optical losses, reducing sensor efficiency. To address this, photonic crystals (PhCs) are utilized to enhance light confinement and minimize losses. This study presents a comprehensive framework for designing high-performance PhC-based optical sensors using OptiFDTD (based on the Finite Difference Time Domain method) and Plane Wave Expansion (PWE) techniques. A detailed analysis of light propagation in 2D PhC waveguides and cavities is carried out. Various sensors—biosensors, pressure, temperature, and magnetic field sensors—are designed to achieve maximum sensitivity and Q-factor, demonstrating the robustness and versatility of the proposed architecture.
About Author
Dr. Juhi Nishat Ansari is an Associate Professor in the Department of Electronics & Communication Engineering at P. D. A. College of Engineering, Kalaburagi. With over 17 years of teaching and research experience, she holds a Ph.D. in Electrical and Electronics Engineering from Visvesvaraya Technological University, specializing in photonic crystals and sensing applications with prior degrees including M.Tech in Power Electronics (2013) and B.E. in Electronics & Communication (2008). Her research interests span photonics, optical sensors, power electronics, and electric vehicles, and she has published more than 15 papers in reputed international journals and IEEE conferences. Dr. Ansari has also filed two patents in renewable energy systems, serves as a Reviewer for IEEE conferences, and is a Senior Member of IEEE along with several other professional bodies. She has chaired technical sessions at national and international conferences and actively contributes to innovation initiatives under AICTE and VTU.
Dr. Sanjaykumar C. Gowre is a dedicated academician and researcher with over two decades of experience in teaching and research in the field of Electronics and Telecommunication Engineering. He holds a Ph.D. in Electronics and Communication Engineering, with specialization in Photonic Crystal Communication and Biosensors from IIT Kharagpur. He also earned his M. Tech with Fiber Optics specialization from IIT Kharagpur and B.E. (Electronics and Communication Engineering) from Gulbarga University Gulbarga. Dr. Gowre’s research expertise spans photonics, optical communication systems, photonic crystal devices, antennas, and embedded microcontroller applications. He has published and presented several research papers in reputed national and international journals and conferences.In addition to research, he has significantly contributed to academic development through curriculum design, outcome-based education implementation, and mentoring of student research projects at both undergraduate and postgraduate levels. He is passionate about integrating emerging technologies such as IoT, embedded systems, and optical networking into engineering education.
Dr. Gowre actively participates in academic committees, workshops, and professional societies, promoting innovation and interdisciplinary collaboration in modern communication technologies.
Dr. Feroza D Mirajkar is working as an Assistant Professor in the Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, Khaja Bandanawaz University, Kalaburagi, and has about 11 years of teaching experience. She has received her Bachelor of Engineering (B.E) Degree in Electronics and Communication Engineering from Visvesvaraya Technological University, Belagavi, Karnataka . She then received Master of Technology (M.Tech) degree in Digital Communication from Basaveshwar Engineering College , Bagalkot under Visvesvaraya Technological University , Belagavi, Karnataka in the year 2013 . She then received Doctor of Philosophy (Ph.D.) degree in the Faculty of Electrical & Electronics Engineering Sciences from Visvesvaraya Technological University , Belagavi, Karnataka, in the year 2024 . Her area of specializations include signal processing , Image processing, Machine learning, Artificial Intelligence and Deep learning. She has various publications in Scopus , Quartile journals , National & international (IEEE) conferences, and has 4 patents. She has a book publication entitled “Signals and Systems” published in first edition.
