A5022011236- Photonic and Optical Devices
- Neural Networks and Reservoir Computing
- Advanced Fiber Laser Technologies
- Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Advanced Photonic Communication Systems
- 2D Materials and Applications
- Mechanical and Optical Resonators
- Nanofabrication and Lithography Techniques
- Photonic Crystals and Applications
Physical Sciences (United States)
2023-2024
University of Maryland, College Park
2020-2024
University of Southern California
2022
The property of self-imaging combined with the polarization birefringence angled multimode waveguide is used to design a silicon nitride (SiN) splitter (PS) at λ ∼ 1550 nm. demonstrated PS on 450 nm thick SiN device layer (with 2.5 µm cladding oxide) has footprint 80 µm×13 and exhibits nearly wavelength independent performance over C+L bands. Also, can be configured as combiner (PC) in reverse direction similar bandwidth performance. measured crosstalk (CT) insertion loss (IL) are...
We demonstrate low-loss ( < 1 dB), broadband (BW ∼ 100 nm near λ 1550 nm) and polarization-independent fiber-to-chip couplers using 3D nano-printed polymer structures on Si 3 N 4 -on-SiO 2 platform.
Quantum computers provide faster solutions to specific compute-intensive classical problems. However, building a fault-tolerant quantum computer architecture is challenging and demands integrating several qubits with optimized signal routing while maintaining its coherence. Experimental realization of such diverse functional components in planar monolithic device due material thermodynamic mismatch between various elements. Furthermore, it requires complex control routing, resulting...
We designed and demonstrated 3D polymer coupler structures to adiabatically couple light into waveguides. measured a coupling loss of 2.1 dB per facet around 1550 nm.
We experimentally demonstrate a SiN angled-MMI based polarization splitter with nearly wavelength-independent performance over C+L bands, insertion loss « 0.8 dB (1.0 dB), and crosstalk < —18 (< -20 dB) for TE (TM) polarization.
Optical static random access memory (O-SRAM) is one of the key components required for achieving goal ultra-fast, general-purpose optical computing. We propose and design a novel O-SRAM using fabrication-friendly photonics device such as cross-coupled micro-ring resonators photodiodes. Based on chosen photonic components, operates at speed 20 Gb/s requires ultra-low (switching) energy ~ 16.7 aJ/bit (~ 1.04 pJ/bit) to store single bit. The footprint bit cell 2400 {\mu}m^2. proposed can be...
We employ a silicon nitride microdisk resonator to observe the transient dynamics of photoexcited carriers in multi-layer and few-layer MoS 2 exfoliated flakes.
We designed and simulated an electro-optic quantum frequency transducer based on coupled micro-disk resonators with conversion rate exceeding 7.35 kHz footprint below 60 × 120µm 2 . The con-version efficiency can be increased to 13% optimized design.