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Comprehensive Investigation of Laser Frequency Noise Characteristics Using Self-Homodyne Setup and Computational Analysis

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Author(s):
Rodigheri, Mareli ; Mahjour, Seyed Saman ; Gallep, Cristiano de Mello ; Sutili, Tiago ; Conforti, Evandro
Total Authors: 5
Document type: Journal article
Source: 2023 SBMO/IEEE MTT-S INTERNATIONAL MICROWAVE AND OPTOELECTRONICS CONFERENCE, IMOC; v. N/A, p. 3-pg., 2023-01-01.
Abstract

Our study presents a technique for analyzing frequency noise in semiconductor lasers using a self-homodyne method. Through the application of a computational approach to experimental data, we identify different types of noise by calculating their respective areas, including Lorentzian, Gaussian, and excess noise. The findings of our investigation revealed that as the laser emission power decreases, the white phase noise (Lorentzian line shape) diminishes both in quantity and proportion. Consequently, the contributions of non-Lorentzian noise components, resulting from environmental and technical factors (Gaussian line shape) as well as excess noise, become more pronounced. (AU)

FAPESP's process: 21/06569-1 - High-speed strategic internet technologies
Grantee:Evandro Conforti
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 23/03732-4 - Design and characterization of few mode fibers and devices for high capacity SDM system
Grantee:Mareli Rodigheri
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 21/11380-5 - CPTEn - São Paulo Center for the Study of Energy Transition
Grantee:Luiz Carlos Pereira da Silva
Support Opportunities: Research Grants - Science Centers for Development
FAPESP's process: 22/11596-0 - Scientific EMU: acquisition of transmission and characterization equipment for ultra-high-speed data links
Grantee:Darli Augusto de Arruda Mello
Support Opportunities: Research Infrastructure Program - Scientific
FAPESP's process: 20/08362-2 - Non-linear ultra-fast technologies for coherent optical systems
Grantee:Mareli Rodigheri
Support Opportunities: Scholarships in Brazil - Doctorate