Pseudospin-polarized slow light waveguides with large delay-bandwidth product
Sign Up to like & getrecommendations! Published in 2024 at "Communications Physics"
DOI: 10.1038/s42005-024-01853-w
Abstract: Delay-bandwidth product (DBP) is a key metric in slow light waveguides, requiring a balance between a large group index and broad bandwidth—two parameters that often involve a trade-off. Here, we propose and demonstrate a slow… read more here.
Keywords: light; group; delay bandwidth; pseudospin polarized ... See more keywords
An amorphous silicon photodiode with 2 THz gain-bandwidth product based on cycling excitation process
Sign Up to like & getrecommendations! Published in 2017 at "Applied Physics Letters"
DOI: 10.1063/1.5001170
Abstract: Since impact ionization was observed in semiconductors over half a century ago, avalanche photodiodes (APDs) using impact ionization in a fashion of chain reaction have been the most sensitive semiconductor photodetectors. However, APDs have relatively… read more here.
Keywords: cycling excitation; bandwidth product; excitation; excitation process ... See more keywords
Photonic Generation of Dual-Chirp Waveforms With Improved Time-Bandwidth Product
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2017.2712192
Abstract: We present a photonic method for the generation of dual-chirp signals. In this approach, a single-tone RF signal is first modulated using a modulator in order to generate two optical carriers, which are further modulated… read more here.
Keywords: generation dual; dual chirp; time bandwidth; bandwidth product ... See more keywords
Achieving a Large Gain-Bandwidth Product From a Compact Antenna
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Antennas and Propagation"
DOI: 10.1109/tap.2017.2700016
Abstract: This paper presents a method to achieve high gain (>20 dBi) and wide bandwidth (>55%) from a compact antenna that is less than one wavelength tall and only $2.6\lambda _{0}$ in diameter at the lowest… read more here.
Keywords: gain; bandwidth product; tex math; gain bandwidth ... See more keywords
Photonic Moiré lattice waveguide with a large slow light bandwidth and delay-bandwidth product.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.462016
Abstract: We proposed an effective approach to enlarge the slow light bandwidth and normalized-delay-bandwidth product in an optimized moiré lattice-based photonic crystal waveguide that exhibits intrinsic mid-band characteristics. A flatband corresponding to a nearly constant group… read more here.
Keywords: bandwidth product; delay bandwidth; bandwidth; slow light ... See more keywords
Design and simulation of a high gain-bandwidth product InGaAs/AlGaAsSb avalanche photodiode with a p-type hybrid absorption layer.
Sign Up to like & getrecommendations! Published in 2025 at "Applied optics"
DOI: 10.1364/ao.551928
Abstract: The rapid development of optical communication has increased the demand for high-speed and high-sensitivity avalanche photodiodes (APDs). However, there is a well-known trade-off between the bandwidth and responsivity of the avalanche photodiodes. To solve this… read more here.
Keywords: gain; hybrid absorption; avalanche; gain bandwidth ... See more keywords