High-Speed Transmission in Multimode Fibers

Freund, Ronald; Bunge, Christian-Alexander; Ledentsov, N. N.; Molin, Denis; Caspar, C.

doi:10.1109/jlt.2009.2030897

Cited by 118 publications

(35 citation statements)

References 31 publications

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“…For larger radial launching offsets, higher-order principal mode groups (PMGs) with more guided modes could be selectively launched [19]. This resulted in the collimated beams having more expanded and speckled beam patterns, as shown in Fig.…”

Section: Launching-offset Dependence Of Coupling Lossmentioning

confidence: 99%

Misalignment Tolerance of Pluggable Ballpoint-Pen Interconnect of Graded-Index Plastic Optical Fiber for 4K/8K UHD Display

Inoue

Koike

2016

IEICE Trans. Electron.

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SUMMARYWe investigate the influence of launching conditions on misalignment tolerance of pluggable ballpoint-pen interconnects, where graded-index plastic optical fibers (GI POFs) are coupled with ball lenses mounted on their end faces. The lateral-misalignment tolerance of the ballpoint-pen connector decreased with an increase in the driving current of a vertical cavity surface emitting laser (VCSEL) under the center launching condition. This was attributed to the VCSEL multimode oscillation, which increased the connector coupling loss through the higher-order guided mode launching in the GI POF and the resulting output beam expansion in the ballpoint-pen connector. The driving-current dependence of the connector coupling loss could be decreased using offset launchings. For a radial launching offset of 20 μm, we could obtain coupling losses below 1 dB for lateral coupling offsets of ±50 μm with little dependence on the driving current. This suggests that data transmission quality for misaligned connection of the GI POFs can be improved further by optimizing launching systems for the ballpoint-pen interconnects. key words: graded-index plastic optical fiber, ballpoint-pen interconnect, pluggable optical cable, 4K/8K UHD display

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Section: Launching-offset Dependence Of Coupling Lossmentioning

confidence: 99%

Misalignment Tolerance of Pluggable Ballpoint-Pen Interconnect of Graded-Index Plastic Optical Fiber for 4K/8K UHD Display

Inoue

Koike

2016

IEICE Trans. Electron.

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“…The Alpha parameter that governs the shape of this graded-index core is tuned to maximize the modal bandwidth at 850nm, the typical operating wavelength of high speed data communications 3 . OM4 MMFs have effective modal bandwidths (EMB) higher than 4,700 MHz-km at 850nm allowing for 100Gbps data communications.…”

Section: Effective Modal Bandwidth (Emb)mentioning

confidence: 99%

WideBand OM4 multi-mode fiber for next-generation 400Gbps data communications

Molin¹,

Achten

Bigot³

et al. 2014

2014 the European Conference on Optical Communication (ECOC)

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We define the bandwidth requirements for OM4 performance within the wavelength window of 850 to 950nm. We have manufactured a MMF meeting these requirements while maintaining full compatibility with legacy OM4. This MMF enables 400Gbps using wavelength division multiplexing. IntroductionMultimode fibers (MMFs) have constantly evolved from the very beginning of optical communications industry through the recent and on-going explosion of the Ethernet traffic. Enabled by VCSEL technology and OM4 level performance, MMFs have proved to be the medium of choice for data communications, delivering reliable and cost-effective 10 to 100Gbps solutions.In order to meet the future increase of demand, the MMF capacity will ultimately have to be increased

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“…Meanwhile, an experimental demonstration of transmitting LTE over 525 m MMF was reported in [5] at wavelength,  of 1310 nm with a ~3% error vector magnitude (EVM). At present, MMFs, identified by their optical multi-mode (OM), have different modal bandwidth as outlined in the ISO/IEC 11801 standard [6], and are considered for use as a fibre backbone infrastructure in existing buildings. OM1-4 can support data rates up to 1 and 10 Gbps, respectively [5].…”

Section: Introductionmentioning

confidence: 99%

“…MMF types are defined under overfilled launch (OFL) bandwidth, which refers to a launching technique that uses a light source with a spot size larger than the fibre core diameter. The typical OFL bandwidth-distance products of OM1, OM2, OM3 and OM4 at 850 nm are 200, 500, 1500 and 3500 MHz•km, respectively [6]. A survey in [2] highlighted that ~17 million km of MMF are installed inbuilding networks worldwide.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of Mode Filtering Technique in 4G-LTE Hybrid RoMMF-FSO for Last-Mile Access Network

Al-Musawi

Cseh

Bohata

et al. 2017

J. Lightwave Technol.

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Abstract-This paper demonstrates a hybrid radio over multimode fibre and free space optics (RoMMF-FSO) system that can be used to extend the transmission range of the 4 th generation longterm evolution (4G-LTE) signal in access networks. A single mode filtering technique (SMFT) is used to enhance 4G-LTE performance. The proposed scheme is evaluated in terms of the system transfer function, laser beam profile, and error vector magnitude (EVM). We show that using SMFT increases the RoMMF-FSO system bandwidth by 2 GHz and improves the received optical power by 13.6 dB. Moreover, the proposed system enhances the EVM by 4%. The measured results show that using a 1 km MMF instead of a 1 km SMF will marginally increase the measured EVM from ~6.6% to ~7% with a 0.2 dB power penalty with respect to the LTE EVM limit of 12.5% as is specified for 16-quadrature amplitude modulation. The proposed system is validated practically under atmospheric turbulence conditions to mimic the outdoor environment. Measured EVM results are verified theoretically through transmitting LTE signals with turbulent using log-normal model. We also show that for a FSO link span of 500 m to meet the EVM target of 12.5% the SNR power penalties are ~2 dB and ~11 dB for σ R 2 of 1.2×10 -4 and 0.1, respectively compared with no turbulence.Index Terms-Free space optics, long term evolution, multimode optical fibres, radio-over-fibre.

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High-Speed Transmission in Multimode Fibers

Cited by 118 publications

References 31 publications

Misalignment Tolerance of Pluggable Ballpoint-Pen Interconnect of Graded-Index Plastic Optical Fiber for 4K/8K UHD Display

Misalignment Tolerance of Pluggable Ballpoint-Pen Interconnect of Graded-Index Plastic Optical Fiber for 4K/8K UHD Display

WideBand OM4 multi-mode fiber for next-generation 400Gbps data communications

Adaptation of Mode Filtering Technique in 4G-LTE Hybrid RoMMF-FSO for Last-Mile Access Network

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