Publications by authors named "Shirpurkar C"
Two-color Semiconductor Mode-locked Laser system for Multiphoton Imaging Applications.
IEEE Photonics Technol Lett
June 2023
We demonstrate an all-semiconductor mode-locked laser system consisting of two external cavity mode-locked lasers operating at wavelengths 834 nm and 974 nm which use semiconductor optical amplifiers as gain media. The two-color laser system emits picosecond pulses with average powers of 25 mW and 60 mW resulting in peak powers exceeding 100 W and 80 W respectively. Synchronized output pulse trains from the lasers with a repetition rate of 282 MHz exhibit a relative timing jitter of 7.
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- Optical interconnects are emerging as a solution to improve data transfer limits in high-performance silicon chips, focusing on enhancing optical communication through wavelength-division multiplexing.
- The study presents an integrated communication scheme that combines wavelength- and mode-multiplexing, achieving a significant 1.12-Tb/s data transmission without errors in a silicon nanophotonic waveguide.
- Additionally, the approach employs inverse-designed couplers for efficient multimode optical transmission between different silicon chips, while ensuring compliance with standard silicon photonic foundry processes, making it scalable beyond current technologies.
We experimentally demonstrate a 400 Gbit/s optical communication link utilizing wavelength-division multiplexing and mode-division multiplexing for a total of 40 channels. This link utilizes a novel, to the best of our knowledge, 400 GHz frequency comb source based on a chip-scale photonic crystal resonator. Silicon-on-insulator photonic inverse-designed 4 × 4 mode-division multiplexer structures enable a fourfold increase in data capacity.
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