Methodological investigation into the noise influence on nanolasers' large signal modulation
| Autor: | Gaofeng Wang, Hongsheng Chen, Junlong Zou, Tao Wang, Wen-Sheng Zhao, Xiao Lin, Gian Luca Lippi, G. P. Puccioni |
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| Rok vydání: | 2021 |
| Předmět: |
Data processing
Computer simulation Noise (signal processing) business.industry Computer science FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics Photon counting 010309 optics Optics Robustness (computer science) Modulation 0103 physical sciences Range (statistics) Electronic engineering 0210 nano-technology business Energy (signal processing) PHOTONIC-CRYSTAL LASER 850 NM VCSELS BANDWIDTH TRANSITION Physics - Optics Optics (physics.optics) |
| Zdroj: | Optics express 29 (2021): 5081–5097. doi:10.1364/OE.416934 info:cnr-pdr/source/autori:WANG T.; ZOU J.; PUCCIONI G.P.; ZHAO W.; LIN X.; CHEN H.; WANG G.; LIPPI G.L./titolo:Methodological investigation into the noise influence on nanolasers' large signal modulation/doi:10.1364%2FOE.416934/rivista:Optics express/anno:2021/pagina_da:5081/pagina_a:5097/intervallo_pagine:5081–5097/volume:29 |
| ISSN: | 1094-4087 |
| DOI: | 10.1364/OE.416934 |
| Popis: | Nanolasers are considered ideal candidates for communications and data processing at the chip-level thanks to their extremely reduced footprint, low thermal load and potentially outstanding modulation bandwidth, which in some cases has been numerically estimated to exceed hundreds of GHz. The few experimental implementations reported to date, however, have so-far fallen very short of such predictions, whether because of technical difficulties or of overoptimistic numerical results. We propose a methodology to study the physical characteristics which determine the system’s robustness and apply it to a general model, using numerical simulations of large-signal modulation. Changing the DC pump values and modulation frequencies, we further investigate the influence of intrinsic noise, considering, in addition, the role of cavity losses. Our results confirm that significant modulation bandwidths can be achieved, at the expense of large pump values, while the often targeted low bias operation is strongly noise- and bandwidth-limited. This fundamental investigation suggests that technological efforts should be oriented towards enabling large pump rates in nanolasers, whose performance promises to surpass microdevices in the same range of photon flux and input energy. |
| Databáze: | OpenAIRE |
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