Recent Progress on Optical Regeneration of Wavelength-Division-Multiplexed Data

Patki, Pallavi G.; Guan, Pengyu; Li, Lü; Lakoba, Taras I.; Oxenløwe, Leif Katsuo; Vasilyev, Michael; Galili, Michael

doi:10.1109/jstqe.2020.3025482

Cited by 16 publications

(6 citation statements)

References 59 publications

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“…Wavelength converters, apart from merely converting a signal from one wavelength band to another, can be used for many important functions in nonlinear-optical signal processing [1][2][3][4][5]. In recent years, the interest in growing the transmission link capacity of both classical and quantum communications by space-division multiplexing (SDM) in fewmode fibers (FMFs) has brought attention to the spatial-mode properties of wavelength converters.…”

Section: Spatial-mode-selective Quantum Frequency Conversionmentioning

confidence: 99%

Devices for quantum communication over mode-division-multiplexing systems

Shamsshooli

Kwon

Guo

et al. 2023

Quantum Computing, Communication, and Simulation III

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In the absence of quantum repeaters, the only way to increase the quantum communication capacity at a given reach is to employ more modes for encoding and transmitting information. While frequency, temporal, and polarization modes have already been exploited for this purpose, the use of many spatial modes over long distances has only recently become possible owing to the development of low-loss few-mode fibers (FMFs).We will discuss the development of two key enablers of quantum communication over FMF spatial modes: 1) spatiallyentangled photon-pair generator and 2) dynamically-reconfigurable spatial-mode de-multiplexer that can perform projective measurements alternating between two sets of mutually unbiased bases in a given spatial mode space. Both devices are based on the spatial-mode-selective quantum frequency conversion process, implemented in either χ (2) (multimode LiNbO3 waveguide) or χ (3) (custom-made FMF) nonlinear medium.

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Section: Spatial-mode-selective Quantum Frequency Conversionmentioning

confidence: 99%

Devices for quantum communication over mode-division-multiplexing systems

Shamsshooli

Kwon

Guo

et al. 2023

Quantum Computing, Communication, and Simulation III

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“…Several multiplexing/demultiplexing technologies are unitized to improve the capacity of communication links, such as wavelength division multiplexing (WDM), mode division multiplexing (MDM), and polarization division multiplexing (PDM). Among them, WDM is one of the most mature technologies, which has been widely applied to optical communication systems by utilizing multiple wavelength channels [3]- [6]. However, due to the limitation of the bandwidth of the erbium-doped fiber amplifier, the available wavelength band is finite.…”

Section: Introductionmentioning

confidence: 99%

A 32-Channel C-Band Hybrid Wavelength/ Polarization Division (de)multiplexer on Silicon

Yin

Huang

et al. 2023

IEEE Photonics J.

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A 32-channel hybrid (de)multiplexer on silicon is designed and experimentally demonstrated to enable polarization division multiplexing (PDM) and wavelength division multiplexing (WDM) for improving the capacity of optical communication links. The hybrid (de)multiplexer is realized by monolithically integrating a polarization rotator and splitter (PRS) and two 16-channel microring resonators (MRRs) arrays. The through and cross ports of the PRS are connected to the bus waveguide of the MRR arrays, respectively. In order to ensure a larger free spectrum range (FSR) to cover all wavelength channels, the radius of the microring is about 3 µm and the wavelength-channel spacing is 1.6 nm. For the hybrid (de)multiplexer, the crosstalk between the adjacent channels and the non-adjacent channels are -20 dB and -25 dB, respectively. When TE0 mode input, the insertion loss is 1.5 dB -3.8 dB, the crosstalk between the through and cross port is less than -24 dB. When TM0 mode inputs, the insertion loss is 1.9 dB -4.5 dB and the polarization crosstalk is less than -22 dB. In order to eliminate the influence of the fabrication errors and temperature on resonance wavelength, a TiN thermal tuning electrode is added to calibrate the deviation of the wavelength.

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“…Nevertheless, OEO regenerators are typically bandwidth limiting, expensive and difficult to implement with WDM [8]. Hence, all-optical 3R regenerators, which are much more power-efficient, have lower latency and integrate much better with optical links, are hotly researched [9]- [12] but are yet to mature.…”

Section: Introductionmentioning

confidence: 99%

A Performance Limit Estimation Framework for Multihop Repeated/Regenerated Optical Links

Francis

Manivasakan

2022

IEEE Access

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We propose and demonstrate a generalized framework for performance limit evaluation and comparison of multihop optical repeated and regenerated links. The model developed is implementation agnostic and applies to multihop optical links of varied forms, including fiber, free space, and underwater links. The framework estimates the best-case performance gains of deploying an all-regenerative link over an all-repeater link for any given implementation. The implementation-independent technique is then illustrated using guided and free-space optical links. An abstract model is developed first with the evolution of signal, noise power, and bit error rate down the link compared and contrasted for both cases. The model is then evaluated using physical parameters for a typical fiber optic intensity-modulated direct detection link, and the obtained all-regenerator link performance advantage is translated to extra reach and lower transmission power requirements. Further, certain approximations are provided to reduce computational complexity and improve the analytical tractability of the procedure, which could be particularly helpful when employed in specialized hardware or for dynamic reconfiguration networks. Finally, the framework's versatility is established by employing it in analyzing an ideal free-space link and comparing amplify and forward links against decode and forward counterparts. Similar results are also reproduced on a commercial optical link simulation suite. Detailed literature on link analysis is provided for fiber, free space, and underwater links, bringing out their similarities. We conclude by elaborating on various current and emerging application domains and certain limitations of the proposed technique.

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Recent Progress on Optical Regeneration of Wavelength-Division-Multiplexed Data

Cited by 16 publications

References 59 publications

Devices for quantum communication over mode-division-multiplexing systems

Devices for quantum communication over mode-division-multiplexing systems

A 32-Channel C-Band Hybrid Wavelength/ Polarization Division (de)multiplexer on Silicon

A Performance Limit Estimation Framework for Multihop Repeated/Regenerated Optical Links

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