A multi-core or multi-fiber WDM System

Shahi, Sina Naderi; Kumar, Shiva

doi:10.1109/icoe.2012.6409577

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…However, in contrast to those MCFs used for supporting hosts, strongly coupling MCFs are very different, and can be used to excite the supermodes to achieve high-sensitivity interferometric sensors. In fact, in order to meet the huge demands for transmission bandwidth in communication and sensing applications, various types of active and passive MCFs have been extensively studied in recent years to expand the signal capacity based on space-division multiplexing technology [ 17 , 18 , 19 , 20 , 21 ]. MCFs can also provide multiparameter sensing [ 22 , 23 , 24 ] or high-power lasers based on coherent beam combination [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Multicore Fiber Bending Sensors with High Sensitivity Based on Asymmetric Excitation Scheme

Suo

Peng

Chen

2022

Sensors

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Bending sensing was realized by constructing a tapered four-core optical fiber (TFCF) sensor. The four-core fiber (FCF) between the fan-in and fan-out couplers was tapered and the diameter became smaller, so that the distance between the four cores arranged in a square became gradually smaller to produce supermodes. The two ends of the TFCF were respectively connected to the fan-in and fan-out couplers so that the individual cores in the FCF could link to the separate single-mode fibers. A broadband light source (superluminescent diodes (SLD)) spanning 1250–1650 nm was injected into any one of the four cores, and the orientation was thus determined. In the tapering process, the remaining three cores gradually approached the excitation core in space to excite several supermodes based on the tri-core structure first, and then transited to the quadruple-core structure. The field distributions of the excited supermodes were asymmetric due to the corner-core excitation scheme, and the interference thus resulted in a higher measurement sensitivity. When the diameter of the TFCF was 7.5 μm and the tapered length was 2.21 mm, the sensitivity of the bending sensor could reach 16.12 nm/m−1.

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Section: Introductionmentioning

confidence: 99%

Multicore Fiber Bending Sensors with High Sensitivity Based on Asymmetric Excitation Scheme

Suo

Peng

Chen

2022

Sensors

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“…Figure 4 shows that for a given OSNR, SEP decreases for triangular profile as compared to that of step index. Forward error correction (FEC) limit [25] defining threshold sensitivity level of a QPSK receiver reduces by about 3 dB when triangular profile MCF is used establishing better receiver performance. Further, SEP predicted by theory of Section 2 and simulation experiment of Section 3 agree well for both step index and triangular index MCF.…”

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confidence: 99%

Augmenting data rate performance for higher order modulation in triangular index profile multicore fiber interconnect

Mishra

Priye

Rahman

2016

Optics Communications

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This is the accepted version of the paper.This version of the publication may differ from the final published version. Permanent repository link AbstractA triangular profile multicore fiber (MCF) optical interconnect (OI) is investigated to augment performance that typically degrades at high data rates for higher order modulation in a short reach transmission system. Firstly, probability density functions (PDFs) variation with inter-core crosstalk is calculated for 8-core MCF OI with different index profile in the core and it was observed that the triangular profile MCF OI is the most crosstalk tolerant. Next, symbol error probability (SEP) for higher order quadrature phase shift keying (QPSK) modulated signal due to inter-core crosstalk is analytically obtained and their dependence on typical characteristic parameters are examined. Further, numerical simulations are carried out to compare the error performance of QPSK for step index and triangular index MCF OI by generating eye diagram at 40 Gbps per channel. Finally, it is shown that MCF OI with triangular index profile supporting QPSK has double spectral efficiency with tolerable trade off in SEP as compared with those of binary phase shift keying (BPSK) at high data rates which is scalable up to 5 Tbps.

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A multi-core or multi-fiber WDM System

Abstract: Using a multi-core or multi-fiber architecture, interchannel nonlinear impairments can be suppressed in a WDM system and transmission reach can be significantly enhanced.

Cited by 2 publications

References 6 publications

Multicore Fiber Bending Sensors with High Sensitivity Based on Asymmetric Excitation Scheme

Multicore Fiber Bending Sensors with High Sensitivity Based on Asymmetric Excitation Scheme

Augmenting data rate performance for higher order modulation in triangular index profile multicore fiber interconnect

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