0.174 dB/km Hollow Core Double Nested Antiresonant Nodeless Fiber (DNANF)

Jasion, Gregory T.; Sakr, Hesham; Hayes, J. R.; Sandoghchi, Seyed Reza; Hooper, Lucy; Fokoua, Eric Numkam; Saljoghei, Arsalan; Mulvad, Hans Christian Hansen; Alonso, Marcelo; Taranta, Austin; Bradley, Thomas D.; Davidson, Ian A.; Chen, Yong; Richardson, David J.; Poletti, Francesco

doi:10.1364/ofc.2022.th4c.7

Cited by 111 publications

(91 citation statements)

References 15 publications

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“…The experiment [128] showed very significant progress versus previous experiments, proving that NANF was on a quick development trend. This trend was confirmed by the latest NANF specimen, presented in the already mentioned recent paper [26], which far outperforms the NANF used in [128]: a loss of 0.174 dB/km in [26] versus 0.8 dB/km in the experiment [128]. In addition, the IMI of the NANF [26] has been measured to be between −54 and −58 dB/km, hence close to the −60 dB/km required for virtually no IMI impact.…”

Section: E Transmission In Hollow Core Fibersupporting

confidence: 78%

“…This trend was confirmed by the latest NANF specimen, presented in the already mentioned recent paper [26], which far outperforms the NANF used in [128]: a loss of 0.174 dB/km in [26] versus 0.8 dB/km in the experiment [128]. In addition, the IMI of the NANF [26] has been measured to be between −54 and −58 dB/km, hence close to the −60 dB/km required for virtually no IMI impact. It can, therefore, be expected that, when the latest generation NANF is used in a long-haul experiment, better results and better uniformity among channels than [128] could be found.…”

Section: E Transmission In Hollow Core Fibersupporting

confidence: 78%

“…While the first fabricated NANFs still had a high loss, steadily decreasing loss values were obtained in the following years. In 2019, the 1-dB/km mark was reached, and recently, a breakthrough value of 0.174 dB/km over the C-band [26] has been reported. The results in [26] also indicate that, if the water peak was eliminated, the loss could be less than 0.23 dB/km over 300+ nm and less than 0.3 dB/km over 400+ nm.…”

Section: E Transmission In Hollow Core Fibermentioning

confidence: 98%

“…In 2019, the 1-dB/km mark was reached, and recently, a breakthrough value of 0.174 dB/km over the C-band [26] has been reported. The results in [26] also indicate that, if the water peak was eliminated, the loss could be less than 0.23 dB/km over 300+ nm and less than 0.3 dB/km over 400+ nm. Further improvement appears possible, too.…”

Section: E Transmission In Hollow Core Fibermentioning

confidence: 98%

“…A possible alternative to single-mode fibers (SMFs) for future UWB systems is hollow-core fibers (HCFs), in particular, the nested antiresonant nodeless fiber (NANF) [25]. Such fibers might provide a very wide bandwidth (300-400 nm) with attenuation comparable to SMF in the C-band [26], together with low dispersion and very low nonlinearity, including SRS. However, this is a very new technology that still needs substantial development to prove commercial viability.…”

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confidence: 99%

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Ultrawideband Systems and Networks: Beyond C + L-Band

et al. 2022

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In the evolution of optical networks, spectral efficiency (SE) enhancement has been the most cost-efficient and thus the main driver for capacity increase for decades. As a result, the development of optical transport systems has been focused on the C-and L-bands, where silica optical fiber exhibits the lowest attenuation, and erbium-doped fiber amplifiers provide an efficient solution to compensate for the optical loss. With a gradual maturity in the SE growth, however, the extension of the optical bandwidth beyond the C + L-band is expected to play a significant role in future capacity upgrades of optical networks and, thus, attract increasing research interests. In this article, we discuss the merits and challenges of ultrawideband optical transport systems and networks beyond conventional bands. KEYWORDS | Optical communication; optical network and switching; optical transceiver (TRx); Raman amplification; ultrawideband (UWB) transmission; wavelength conversion; wavelength-division multiplexing (WDM).

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Section: E Transmission In Hollow Core Fibersupporting

confidence: 78%

Section: E Transmission In Hollow Core Fibersupporting

confidence: 78%

Section: E Transmission In Hollow Core Fibermentioning

confidence: 98%

Section: E Transmission In Hollow Core Fibermentioning

confidence: 98%

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confidence: 99%

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Ultrawideband Systems and Networks: Beyond C + L-Band

et al. 2022

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Internal Ceramic Protective Coating of Hollow‐Core Fibers

Jouin,

Thomas,

Orihuel

et al. 2024

Adv Eng Mater

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In order to optimize the use of hollow‐core photonic crystal fibers (HC‐PCF), their cores are filled with an atomic gas for an ultra‐enhanced interaction with an incident laser beam in applications such as atomic vapor microcells. One challenge in these gas‐filled HC‐PCFs is to control the physio‐chemical interactions between the gas medium and the silica inner‐surface of the fiber core‐surround. This work thus focuses on the processing of ceramic coatings on glass substrates by chemical solution deposition. It also describes the successful implementation of an original coating procedure for a deposition inside hollow‐core fibers with complex microstructures. It is indeed possible to form a thin, dense, inorganic and amorphous layer with a low thickness, low roughness and high transparency. To obtain such a result, several parameters must be controlled, including the concentration of the solution, the technique and the deposition time, as well as the heat treatment undergone by the fiber. In particular, the selected aluminosilicate coatings, which are non‐porous and present a 20 to 30 nm thickness, demonstrated a considerable improvement of the lifetime properties of the fibers filled with rubidium vapor, without modifying its original guiding properties.This article is protected by copyright. All rights reserved.

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Stable Optical Frequency Comb Distribution Enabled by Hollow‐Core Fibers

Feng

Marra

Zhang

et al. 2022

Laser & Photonics Reviews

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Over the last two decades, optical frequency combs (OFCs) have enabled some of the most accurate measurements in physics. Distributing light from OFCs via optical fibers could make these high-accuracy measurement tools available more widely, from a few dedicated metrology laboratories to other laboratories and industry. However, the performance of distributed OFCs is strongly limited by impairments of standard single mode fiber (SMF), most notably its thermal sensitivity of chromatic dispersion, for which no compensation technique has been shown to date. To overcome this limitation, use of a new class of optical fiber is suggested here: a hollow core fiber (HCF), which offers more than an order of magnitude lesser such impairment. The measured OFC frequency stability of the optical mode and mode spacing reaches 1.8 × 10 −19 and 1.5 × 10 −17 at a few thousand seconds, respectively, after transmitting through 7.7 km of HCF. To the best of knowledge, this is the best ever performance for km-lengths of fiber-based OFC distribution. Besides, other HCF advantages over SMF in this application are discussed. Specifically, HCFs offer over an order of magnitude lower thermal sensitivity of propagation delay, several orders of magnitude lower optical nonlinearity, and almost ten times lower chromatic dispersion.

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0.174 dB/km Hollow Core Double Nested Antiresonant Nodeless Fiber (DNANF)

Abstract: We report the first double-nested antiresonant hollow core fiber. The fiber matches the loss of commercial solid core fibers in the C-band (0.174 dB/km) and fundamentally improves it (0.22 dB/km) in the O-band.

Cited by 111 publications

References 15 publications

Ultrawideband Systems and Networks: Beyond C + L-Band

Ultrawideband Systems and Networks: Beyond C + L-Band

Internal Ceramic Protective Coating of Hollow‐Core Fibers

Stable Optical Frequency Comb Distribution Enabled by Hollow‐Core Fibers

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