Pragya Mishra
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Pragya Mishra has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Gopalkrishna Hegde
Department of Instrumentation and Applied Physics, Indian Institute of Science, Bengaluru, India
1 shared publication - Srinivas Talabattula
Indian Institute of Science
1 shared publication Talabattula Srinivas
Department of Electrical Communication Engineering, Indian Institute of Science, Bangalore, 560012, Karnataka, India
1 shared publicationTushar Gaur
Synopsys (India) Pvt. Ltd., Hyderabad, 560081, Telangana, India
1 shared publication- Tushar Gaur
Department of Electrical Communication Engineering Indian Institute of Science 560012 Bangalore
1 shared publication
Latest Publications
- Open Access
- 25 November 2025
- Published by Springer Nature in Scientific Reports
- Vol. 15 (1) , 41943
Fano-engineered high-Q compact nested ring resonator based photonic device for advanced multi-analyte biosensing applications
This work presents a compact, CMOS-compatible, Fano-engineered Nested Ring Resonator (NRR) for advanced biosensing applications. The proposed design supports three distinct Fano resonances within a single device, each exhibiting sharp spectral asymmetries that enhance sensitivity to refractive index variations. The device demonstrates an extinction ratio exceeding 50 dB, a spectral contrast of 99.95%, a quality factor ([Formula: see text]) of 7192, a maximum sensitivity of 583.3 nm/RIU and FOM of 1587 RIU-1, significantly outperforming conventional Lorentzian-based resonators. The novelty of the approach lies in achieving high-contrast, high-[Formula: see text] Fano resonances through a minimal structural modification in NRR without requiring complex or large-scale architectures. The device allows simultaneous multi-analyte detection, facilitated by distinct Fano resonances at different wavelengths, for analyte refractive indices in the range of 1.33-1.50 RIU. The Fano parameter ([Formula: see text]) extracted through lineshape fitting exhibits considerable tunability, further broadening the device applicability. These results highlight the potential of Fano-engineered NRRs as practical, scalable, and integrable platforms for next-generation lab-on-chip photonic biosensing systems.
- 25 November 2025
- Published by Springer Nature in Scientific Reports
- Vol. 15 (1) , 41943
Open AccessFano-engineered high-Q compact nested ring resonator based photonic device for advanced multi-analyte biosensing applications
This work presents a compact, CMOS-compatible, Fano-engineered Nested Ring Resonator (NRR) for advanced biosensing applications. The proposed design supports three distinct Fano resonances within a single device, each exhibiting sharp spectral asymmetries that enhance sensitivity to refractive index variations. The device demonstrates an extinction ratio exceeding 50 dB, a spectral contrast of 99.95%, a quality factor ([Formula: see text]) of 7192, a maximum sensitivity of 583.3 nm/RIU and FOM of 1587 RIU-1, significantly outperforming conventional Lorentzian-based resonators. The novelty of the approach lies in achieving high-contrast, high-[Formula: see text] Fano resonances through a minimal structural modification in NRR without requiring complex or large-scale architectures. The device allows simultaneous multi-analyte detection, facilitated by distinct Fano resonances at different wavelengths, for analyte refractive indices in the range of 1.33-1.50 RIU. The Fano parameter ([Formula: see text]) extracted through lineshape fitting exhibits considerable tunability, further broadening the device applicability. These results highlight the potential of Fano-engineered NRRs as practical, scalable, and integrable platforms for next-generation lab-on-chip photonic biosensing systems.
- Open Access
Modeling and Analysis of Device Orientation, Analog and Digital Performance of Electrode Design for High Speed Electro-Optic Modulator
Electro-optic modulators (EOMs) are crucial devices for modern communication enabling high bandwidth optical communication links. Traveling wave electrodes are used to obtain high-speed modulation in these EOMs. We present the electrode design and analysis along with the study of effects of changing orientation on device performance for a thin-film lithium niobate tunable Mach–Zehnder interferometer (MZI) that offers sub-THz bandwidth operations. High velocity and impedance matching with low RF attenuation, high third-order SFDR (∼121 dB/Hz2/3) and a low half-wave voltage length product (1.74 V.cm) have been achieved for a bandwidth of 136 GHz. High-speed digital modulation using multi-level signal formats (PAM-2, QAM-4 and QAM-16) with low BER for 400 Gbps data has been demonstrated to assess the digital performance of the device.
Open AccessModeling and Analysis of Device Orientation, Analog and Digital Performance of Electrode Design for High Speed Electro-Optic Modulator
Electro-optic modulators (EOMs) are crucial devices for modern communication enabling high bandwidth optical communication links. Traveling wave electrodes are used to obtain high-speed modulation in these EOMs. We present the electrode design and analysis along with the study of effects of changing orientation on device performance for a thin-film lithium niobate tunable Mach–Zehnder interferometer (MZI) that offers sub-THz bandwidth operations. High velocity and impedance matching with low RF attenuation, high third-order SFDR (∼121 dB/Hz2/3) and a low half-wave voltage length product (1.74 V.cm) have been achieved for a bandwidth of 136 GHz. High-speed digital modulation using multi-level signal formats (PAM-2, QAM-4 and QAM-16) with low BER for 400 Gbps data has been demonstrated to assess the digital performance of the device.