Hollow-core conjoined-tube fiber for penalty-free data transmission under offset launch conditions

Ge, Dawei; Ding, Wei; Wang, Xiaocong; Gao, Shoufei; Zhang, Xin; Sun, Yi-Zhi; Li, Juhao; Chen, Zhangyuan; Wang, Pu

doi:10.1364/ol.44.002145

Cited by 20 publications

(11 citation statements)

References 28 publications

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“…The latest loss record of NANF has reached 0.28 dB km -1 across the C and L bands 28 , considerably narrowing the gap with solid-core glass fibres to a factor less than two. Furthermore, the single-spatial-mode attribute of AR-HCF has also been validated in experiments 29,30 , and an exceptional low interpolarization coupling (orders of magnitude lower than solid-core glass fibres) is discovered recently 31 .…”

Section: Introductionmentioning

confidence: 84%

High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fiber at around 800 nm

Chen

Ding²,

Wang

et al. 2021

Photon. Res.

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The performances of optical fibre-based quantum information systems are limited by the intrinsic properties of silica glass materials, e.g. high latency, Rayleigh-scattering loss wavelength scaling law, and cross-coupling induced modal impurity. Hollow-core optical fibre (HCF) promises to unify air-borne light propagation and non-line-of-sight transmission, thus holding great potentials for versatile photonics-based quantum information applications. The early version of HCF based on photonic-bandgap guidance has not proven itself as a reliable quantum channel because of the poor modal purity in both spatial and polarization domains, as well as significant difficulty in fabrication when the wavelength shifts to the visible region. In this work, based on the polarization degree of freedom, we first, to the best of our knowledge, demonstrate high-fidelity (~0.98) single-photon transmission and distribution of entangled photons over a conjoined-tube hollow-core fibre (CTF) by using commercial silicon single-photon avalanche photodiodes. Our CTF realized the combined merits of low loss, high spatial mode purity, low polarization degradation, and low chromatic dispersion. We also demonstrate single-photon low latency (~99.96% speed of light in vacuum) transmission, thus paving the way for extensive uses of HCF links in versatile polarization-based quantum information processing.

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Section: Introductionmentioning

confidence: 84%

High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fiber at around 800 nm

Chen

Ding²,

Wang

et al. 2021

Photon. Res.

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“…We note that CD characterization over a wider spectral range can be realized by using other characterization methods, such as the Mach-Zehnder interferometer method together with a super-continuum source. [34,35] To facilitate a direct comparison, our experiments were carried out on spools that were available in our labs, and which had as close a physical length to the NANF under test as possible (4.76 km). These fibers were a ≈4.53-km length of SSMF (Corning SMF-28e) and a ≈4.73-km length of NZ-DSF (Corning LEAF).…”

Section: And Bandwidth Comparisonmentioning

confidence: 99%

Low‐Latency WDM Intensity‐Modulation and Direct‐Detection Transmission Over >100 km Distances in a Hollow Core Fiber

Hong

Bottrill

Bradley

et al. 2021

Laser & Photonics Reviews

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The pervasive digital economy, fueled by developments in datacenter networking and cloud/edge computing, relies ever increasingly on the implementation of short-to metro-range high-capacity, low-latency optical communication links. In this paper, it is demonstrated that the low spectrally flat chromatic dispersion and ultralow nonlinearity possible in hollow-core fibers (HCFs) compared to conventional solid-core fibers offer significant potential for the transmission of intensity-modulation and direct-detection (IM-DD) signals over 100-km-scale distances. Specifically, the longest HCF-only IM-DD wavelength-division multiplexed (WDM) C-band transmission experiments (>100km) without chromatic dispersion compensation to date are reported, achieving reach improvements of approximately 5 times and 2 times compared to using standard single-mode fiber and non-zero dispersion-shifted fiber, respectively, in the same experimental recirculating loop set-up. For >100-km transmission, a significant >150-µs latency reduction can be obtained using HCF. These results, in combination with recent progress in loss reduction in HCFs, indicate that such fibers present a promising route to the realization of simple, cost-effective, high-capacity, ultra-low-latency IM-DD WDM transmission links with the potential to revolutionize optical networks in the years to come.

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“…Apart from wavelength [10], polarization [11] and time [12] multiplexing schemes, MDM enables multimode data transmission by multiplexing through a single optical channel. In MDM, modes can be excited through various mechanisms such as spatial light modulators [13], offset launch [14], high-speed VCSEL arrays [15] and photonic crystal fibers (PCF) [16]. Researchers have used four OAM beams (1 ±1 and 1 ±3) to transmit 400 Gbps data through an FSO link of 120 m in 2016 [17]; MDM-OFDM scheme to transmit 80 Gbps data through an FSO link of 50 km in 2017 [7]; and MDM-based polarisation phase shift key scheme to transmit 80 Gbps data through an FSO link of 90 km in 2020 [18].…”

Section: Introductionmentioning

confidence: 99%

Cost-Efficient Hybrid WDM-MDM-Ro-FSO System for Broadband Services in Hospitals

Liang¹,

Zhang

Nebhen

et al. 2021

Front. Phys.

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The expansion of high-speed communication needs due to explosive growth of subscribers each year has led the researchers to design the next generation communication systems which can cope with the current growing demand. Millimeter waves, operated within the range of 30 GHz to 300 GHz, can become potential carrier for delivering large amount of data. However, in hospital scenarios, these radio waves are subjected to strict regulations due to direct impact on patients’ health as well as high interference with other medical devices which again imposes critical challenge on patients. Thus, it is a challenge for the researchers to provide communication/broadband services for transmission of such sensitive biomedical sensor data in hospitals locations. Radio over Free space (Ro-FSO) systems may become the attractive solution to deliver millimeter waves over free space link with high speed. Further, to expand the capacity of Ro-FSO systems, mode division multiplexing (MDM) plays a vital role in addition to wavelength division multiplexing (WDM) scheme. In this work, we have demonstrated the MDM-WDM scheme to deliver four channels with each one having the capacity of 10 Gbps up-converted to 40 GHz over FSO link which is suitable for providing broadband and communication services within the hospital premises. Moreover, the proposed WDM-MDM-Ro-FSO link is evaluated under different fog conditions.

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Hollow-core conjoined-tube fiber for penalty-free data transmission under offset launch conditions

Cited by 20 publications

References 28 publications

High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fiber at around 800 nm

High-fidelity, low-latency polarization quantum state transmissions over a hollow-core conjoined-tube fiber at around 800 nm

Low‐Latency WDM Intensity‐Modulation and Direct‐Detection Transmission Over >100 km Distances in a Hollow Core Fiber

Cost-Efficient Hybrid WDM-MDM-Ro-FSO System for Broadband Services in Hospitals

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