Interferometry Applications in All-Optical Communications Networks

Dionísio, Rogério

doi:10.5772/66133

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Optical interferometers are of fundamental importance for precision measurements in modern age, underpinning research and industrial applications in a variety of fields such as astronomy [1][2][3], remote detection [4,5], surface profiling [6,7], optical communications [8], quantum optics [9,10], biosensing [11,12], fluid dynamics [13,14], optometry [15], and holographic imaging [16,17]. Generally, an optical interferometer starts with a light input, then splits it into several beams, exposes parts of them to external effects (e.g., changes in length or refractive index), and finally recombines for superposition.…”

Section: Introductionmentioning

confidence: 99%

Integrated photonic chips based on Sagnac interference

Juodkazis¹,

Moss²,

Wu³

et al. 2023

Preprint

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As a fundamental optical approach to interferometry, Sagnac interference has been widely used for reflection manipulation, precision measurements, and spectral engineering in optical systems. Compared to other interferometry configurations, it offers attractive advantages by yielding a reduced system complexity without the need for phase control between different pathways, thus offering a high degree of stability against external disturbance and a low wavelength dependence. The advance of integration fabrication techniques has enabled chip-scale Sagnac interferometers with greatly reduced footprint and improved scalability compared to more conventional approaches implemented by spatial light or optical fiber devices. This facilitates a variety of integrated photonic devices with bidirectional light propagation, showing new features and capabilities compared to unidirectional-light-propagation devices such as Mach-Zehnder interferometers (MZIs) and ring resonators (RRs). This paper reviews functional integrated photonic devices based on Sagnac interference. First, the basic theory of integrated Sagnac interference devices is introduced, together with comparisons to other integrated photonic building blocks such as MZIs, RRs, photonic crystal cavities, and Bragg gratings. Next, the applications of Sagnac interference in integrated photonics, including reflection mirrors, optical gyroscopes, basic filters, wavelength (de)interleavers, optical analogues of quantum physics, and others, are systematically reviewed. Finally, the open challenges and future perspectives are discussed.

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Section: Introductionmentioning

confidence: 99%

Integrated photonic chips based on Sagnac interference

Juodkazis¹,

Moss²,

Wu³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Optical interferometers are of fundamental importance for precision measurements in modern age, underpinning research and industrial applications in a variety of fields such as astronomy [1][2][3], remote detection [4,5] , surface profiling [6,7], optical communications [8], quantum optics [9,10], biosensing [11,12], fluid dynamics [13,14], optometry [15], and holographic imaging [16,17]. Generally, an optical interferometer starts with a light input, then splits it into several beams, exposes parts of them to external effects (e.g., changes in length or refractive index), and finally recombines for superposition.…”

Section: Introductionmentioning

confidence: 99%

Advanced optical devices using Sagnac interference in integrated photonics

Moss¹

2023

Preprint

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As a fundamental optical approach to interferometry, Sagnac interference has been widely used for reflection manipulation, precision measurements, and spectral engineering in optical systems. Compared to other interferometry configurations, it offers attractive advantages by yielding a reduced system complexity without the need for phase control between different pathways, thus offering a high degree of stability against external disturbance and a low wavelength dependence. The advance of integration fabrication techniques has enabled chip-scale Sagnac interferometers with greatly reduced footprint and improved scalability compared to more conventional approaches implemented by spatial light or optical fiber devices. This facilitates a variety of integrated photonic devices with bidirectional light propagation, showing new features and capabilities compared to unidirectional-light-propagation devices such as Mach-Zehnder interferometers (MZIs) and ring resonators (RRs). Here, we present our latest results for functional integrated photonic devices based on Sagnac interference. We outline the theory of integrated Sagnac interference devices with comparisons to other integrated photonic building blocks such as MZIs, RRs, photonic crystal cavities, and Bragg gratings. We present our latest results for Sagnac interference devices realized in integrated photonic chips, including reflection mirrors, optical gyroscopes, basic filters, wavelength (de)interleavers, and optical analogues of quantum physics.

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“…The optical signal is demanded to have high speed and bandwidth for future and potential networks [20,21]. Some developments of optical networks with the use of the mach-zehnder interferometer (MZI) modulator were presented [22]. MZI is the device that used to calculate the relative phase shift between two beams of light source either by changing the length of one arm or by putting a sample in one the arm by biasing due to high power consumption that needs to be removed.…”

Section: Introductionmentioning

confidence: 99%

Comparison of lithium niobate and silicon substrate on phase shift and efficiency performance for mach-zehnder interferometer modulator

Roslan

Awang

Yusoff

et al. 2021

IJEECS

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<span>In this study, the low-group velocity slow-light mach-zehnder interferometer (MZI) modulator, low loss and high efficiency for two modulator substrate lithium niobate (LN) and silicon were presented and optimized at 1.55µm operating wavelength. The high power consumption of conventional modulator was the major drawback in the operation of modulators. Therefore, it was a good time for low-power modulator design and development and to compare the LN and Silicon modulator on the phase shifted using the slow-light technique by designing the full MZI modulator consisting of splitter and combiner on both substrates. The phase shift of LN is 2% compared with the silicon 0.09% and higher phase shift give better performance with low power consumption due to the change of modulating voltage of the MZI modulator for LN while the silicon depends on modulating voltage manipulating concentration of charge carrier in doped silicon.</span>

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Interferometry Applications in All-Optical Communications Networks

Cited by 4 publications

References 19 publications

Integrated photonic chips based on Sagnac interference

Integrated photonic chips based on Sagnac interference

Advanced optical devices using Sagnac interference in integrated photonics

Comparison of lithium niobate and silicon substrate on phase shift and efficiency performance for mach-zehnder interferometer modulator

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