Optical transmission systems and networks are key elements of the worldwide communications infrastructure, ranging from the backbone of 5G and 6G mobile systems to worldwide optical fiber telecommunication networks and integrated photonics devices. The exponential growth of data services in recent years has led to the imperative need to comprehend and manipulate the properties of electromagnetic waves traveling through waveguides with unparalleled precision. This necessity is particularly evident in optical systems such as Spatial Division Multiplexing transmissions, where waveguides need to be crafted with remarkable accuracy. However, deviations between the actual waveguide and its intended design, caused by imperfect manufacturing processes and unpredictable environmental disturbances, can lead to erratic light propagation, potentially compromising system performances. Therefore, this thesis aims to employ transformation optics and coupled-mode theory to simulate a broad spectrum of microstructured optical fibers, thereby accounting for these non-idealities and enhancing system reliability.
I sistemi e le reti di trasmissione ottica sono elementi fondamentali delle telecomunicazioni moderne, esse spaziano dalla colonna portante dei sistemi mobili 5G e 6G, alle reti di telecomunicazioni in fibra ottica e ai dispositivi di fotonica integrata. La crescita esponenziale dei servizi di dati negli ultimi anni ha portato all'imperativa necessità di comprendere e manipolare le proprietà delle onde elettromagnetiche che viaggiano attraverso le guide d'onda con una precisione senza precedenti. Questa necessità è particolarmente evidente nei sistemi ottici che fanno utilizzo della Spatial Division Multiplexing, dove le guide d'onda devono essere realizzate con notevole accuratezza. Tuttavia, le deviazioni rispetto alle guide d’onda ideali, causate da processi di fabbricazione e disturbi ambientali imprevedibili, possono portare ad un differente comportamento nella propagazione della luce, potenzialmente compromettendo le prestazioni del sistema. Pertanto, questa tesi mira a impiegare la transformation optics e la coupled-mode theory per simulare un ampio spettro di fibre ottiche microstrutturate, tenendo conto di queste non idealità e migliorando l'affidabilità del sistema.
Numerical analysis of the modal properties of microstructured optical fibers
BALDASSI, FEDERICA
2023/2024
Abstract
Optical transmission systems and networks are key elements of the worldwide communications infrastructure, ranging from the backbone of 5G and 6G mobile systems to worldwide optical fiber telecommunication networks and integrated photonics devices. The exponential growth of data services in recent years has led to the imperative need to comprehend and manipulate the properties of electromagnetic waves traveling through waveguides with unparalleled precision. This necessity is particularly evident in optical systems such as Spatial Division Multiplexing transmissions, where waveguides need to be crafted with remarkable accuracy. However, deviations between the actual waveguide and its intended design, caused by imperfect manufacturing processes and unpredictable environmental disturbances, can lead to erratic light propagation, potentially compromising system performances. Therefore, this thesis aims to employ transformation optics and coupled-mode theory to simulate a broad spectrum of microstructured optical fibers, thereby accounting for these non-idealities and enhancing system reliability.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/69462