Experimental Evaluation of Principal Mode Groups as High-Speed Transmission Channels in Spatial Multiplex Systems

Franz, B.; Bülow, H.

doi:10.1109/lpt.2012.2202224

Cited by 48 publications

(16 citation statements)

References 4 publications

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“…They have shown record-high fiber capacity, but they are not compatible with transceivers low cost and low complexity requirements associated with short haul links. A scheme known as mode group division multiplexing (MGDM) in MMFs, in which degenerate modes are used to transport a single data channel, has been introduced in [5,6]. This way, intra-mode group mixing can be neglected, therefore relaxing the necessity of MIMO processing and allowing the use of simple on-off keying (OOK) modulation and direct detection.…”

Section: Introductionmentioning

confidence: 99%

4×10 Gbit/s bidirectional transmission over 2 km of conventional graded-index OM1 multimode fiber using mode group division multiplexing

Lenglé¹,

Insou²,

Jian³

et al. 2016

Opt. Express

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We demonstrate 4 × 10 Gbit/s error-free bidirectional transmission over 2 km of conventional OM1 graded-index multimode fiber using OOK modulation and direct detection. We also perform field transmission to show reach and capacity boosts on legacy multimode infrastructure. Such transmission is enabled by selective mode group division multiplexing, based on multi-plane light conversion over 4 mode groups of the multimode fiber.

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Section: Introductionmentioning

confidence: 99%

4×10 Gbit/s bidirectional transmission over 2 km of conventional graded-index OM1 multimode fiber using mode group division multiplexing

Lenglé¹,

Insou²,

Jian³

et al. 2016

Opt. Express

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“…1(a). The resulting fibers offer several modal properties that are favorable for modedivision multiplexing [15,17]. In this work we investigated bend insensitive commercial OM3 MMF.…”

Section: Graded-index Multimode Fibers For Mode-division Multiplexingmentioning

confidence: 99%

“…In 2000 Stuart [14] demonstrated statistical mode multiplexing in combination with digital signal processing (DSP) to increase either capacity or transmission distance of MMFs and numerous schemes for detection, group multiplexing [15,16,17,18], and multiple-input multiple-output (MIMO) digital signal processing (DSP) [15,19,16] have been proposed and demonstrated. Recent work on mode coupling into modern graded-index MMF based on spatial light modulators (SLMs) [15,17] clearly indicates that for a MMF length of a few km, the light guided will prevalently stay within the same mode groups of the fiber, where mode groups are formed as group of degenerate modes of the MMF. In this work we make use of the relative weak coupling between the mode groups of a MMF in combination with high performance photonic lanterns to evaluate the MDM transmission performance for various MMF length for the case where only 3 or 6 spatial modes (corresponding to the first 2 and 3 modes groups) are used.…”

Section: Introductionmentioning

confidence: 99%

Mode-multiplexed transmission over conventional graded-index multimode fibers

Ryf¹,

Fontaine²,

Chen³

et al. 2015

Opt. Express

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Abstract:We present experimental results for combined modemultiplexed and wavelength multiplexed transmission over conventional graded-index multimode fibers. We use mode-selective photonic lanterns as mode couplers to precisely excite a subset of the modes of the multimode fiber and additionally to compensate for the differential group delay between the excited modes. Spatial mode filters are added to suppress undesired higher order modes. We transmit 30-Gbaud QPSK signals over 60 WDM channels, 3 spatial modes, and 2 polarizations, reaching a distance of 310 km based on a 44.3 km long span. We also report about transmission experiments over 6 spatial modes for a 17-km single-span experiment. The results indicate that multimode fibers support scalable mode-division multiplexing approaches, where modes can be added over time if desired. Also the results indicate that mode-multiplexed transmission distance over 300 km are possible in conventional multimode fibers.

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“…Laser-optimized 50-µm OM4 MMF offers the benefit of favorable connector tolerances and provides standardized, effective modal bandwidth > 4.7 GHzkm at 850 nm. Stuart [4] proposed the use of spatial diversity to increase either capacity or transmission distance of multimode fibers and numerous schemes for detection, group multiplexing, and multiple-input multiple-output (MIMO) digital signal processing (DSP) have been proposed and demonstrated [5], [6], [7], [8], [9] nevertheless only with modest increase in transmission distance and capacity. The full capacity of the multimode fiber can be unleashed by selectively coupling into all modes of a subset of mode groups (for example the first 3 mode groups) of a MMF and subsequent MIMO DSP.…”

Section: Introductionmentioning

confidence: 99%