Cascaded and Multisection Sagnac Interferometers for Scalable and Tunable All-Optical OFDM DEMUX

Du, Jiangbing; Shu, Chester

doi:10.1109/jlt.2013.2264432

Cited by 15 publications

(6 citation statements)

References 22 publications

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“…Many researchers have addressed general applications with optical logic gates and logic processing signals [6][7][8][9][10][11][12][13][14][15][16][17][18]. The authors in [15] recently demonstrated a new scheme with optical logic operation in a Sagnac interferometer by electro-optical modulation.…”

Section: Introductionmentioning

confidence: 99%

“…The authors in [15] recently demonstrated a new scheme with optical logic operation in a Sagnac interferometer by electro-optical modulation. In [16], the authors developed an optical multiplexing element with optical demultiplexing (DEMUX) of orthogonal frequency division multiplexing (OFDM) signals based on cascaded and multisection Sagnac interferometers.…”

Section: Introductionmentioning

confidence: 99%

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PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

Ferreira

Coelho

Sousa

et al. 2016

Optics & Laser Technology

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

Ferreira

Coelho

Sousa

et al. 2016

Optics & Laser Technology

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“…The first fiber-optic gyroscope (Figure 2(e)) was demonstrated by Vali and Shorthill in 1976 [41], and experienced rapid progress after 1980s (Figure 2(f)) [42,43]. Nowadays, Sagnac interferometers have been used in extensive applications such as inertial navigation [44,45], optical communication [46], lasering [47,48], and sensing [49,50] (Figures 2(g) -(k)). [41], Copyright 1976, Optica Publishing Group.…”

mentioning

confidence: 99%

Reflection Mirrors, Optical Gyroscopes, Filters, and Wavelength Interleavers Based on 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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“…Theoretically, an OFDM signal can be decoded with a digital fast Fourier transform but, in this case, the maximum capacity is limited by the electrical bandwidths of coherent receivers, the bandwidths of analogto-digital converters and the speed of digital signal processing (DSP) [2]. By contrast, all-optical OFDM demultiplexers can detect ultra-high-speed, broadband OFDM signals [3][4][5][6][7][8][9]. In general, AO-OFDM demultiplexers perform an optical discrete Fourier transform, which acts as a matched filter [3,4].…”

mentioning

confidence: 99%

“…By contrast, all-optical OFDM demultiplexers can detect ultra-high-speed, broadband OFDM signals [3][4][5][6][7][8][9]. In general, AO-OFDM demultiplexers perform an optical discrete Fourier transform, which acts as a matched filter [3,4]. Alloptical demultiplexers based on cascaded optical delay interferometers [5], arrayed-waveguide gratings [6], passive planar hybrids [7], and multimode interference [8] have been reported.…”

mentioning

confidence: 99%

All-optical OFDM demultiplexing with optical partial Fourier transform and coherent sampling

et al. 2019

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Cascaded and Multisection Sagnac Interferometers for Scalable and Tunable All-Optical OFDM DEMUX

Cited by 15 publications

References 22 publications

PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

Reflection Mirrors, Optical Gyroscopes, Filters, and Wavelength Interleavers Based on Sagnac Interference in Integrated Photonics

All-optical OFDM demultiplexing with optical partial Fourier transform and coherent sampling

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