Demonstration of automatic dispersion control for 160 Gbit/s transmission over 275 km of deployed fibre

Wielandy, S.; Westbrook, Paul S.; Fishteyn, M.; Reyes, P.; Schairer, Wolfgang; Rohde, Harald; Lehmann, G.

doi:10.1049/el:20040466

Cited by 20 publications

(19 citation statements)

References 4 publications

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“…5. The dispersion tuning range of this device was −144 to −213 ps/nm [23]. Such large bandwidths are at present only achievable using FBGs.…”

Section: Thermally Tuned Tdcsmentioning

confidence: 92%

“…Thus FBG TDCs can be employed at very high bit rates, including 160 Gbit/s [22,23]. Figure 8 shows a 160 Gbit/s fiber grating TDC with over 350 GHz of bandwidth.…”

Section: Thermally Tuned Tdcsmentioning

confidence: 99%

“…Such large bandwidths are at present only achievable using FBGs. The system performance of 160 Gbit/s TDCs are also summarized in Table 1 and discussed in [22] and [23].…”

Section: Thermally Tuned Tdcsmentioning

confidence: 99%

“…Gratings with bandwidth in excess of 300 GHz and 50 ps/nm tuning range have been used with 160 Gbit/s RZ systems [22]. These fiber grating dispersion compensators have also been employed in applications that require closed loop stabilization and used in actual field trials [23].…”

Section: Comparison With Other Tdc Technologiesmentioning

confidence: 99%

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Fiber-based tunable dispersion compensation

Litchinitser¹,

Sumetsky²,

Westbrook³

2007

J Optic Comm Rep

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Abstract. Tunable dispersion has been implemented in various technology platforms, including fiber gratings, planar waveguides, thin film etalons, and bulk optic technologies. This paper will focus on fiber grating based tunable dispersion compensation, because fiber gratings are at present one of the best developed TDC technologies available. The paper is divided into three parts. In the first part we describe grating based TDC technologies and discuss their advantages and disadvantages. We focus on thermally tuned linearly chirped fiber gratings, as these have to date been the most successful grating technology for 40 Gbit/s. We also compare grating TDCs to two other prominent tunable dispersion technologies: thin film etalons and planar waveguide ring resonators. In the second section we describe the techniques used to fabricate high performance dispersion compensation gratings as well as the theory of the primary defect of fiber grating dispersion compensation: group delay ripple (GDR). In the third section we describe the telecom system related issues for tunable gratings, including characterization of grating performance, tunability requirements and results from actual system trials using tunable FBGs.

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“…5. The dispersion tuning range of this device was −144 to −213 ps/nm [23]. Such large bandwidths are at present only achievable using FBGs.…”

Section: Thermally Tuned Tdcsmentioning

confidence: 92%

“…Thus FBG TDCs can be employed at very high bit rates, including 160 Gbit/s [22,23]. Figure 8 shows a 160 Gbit/s fiber grating TDC with over 350 GHz of bandwidth.…”

Section: Thermally Tuned Tdcsmentioning

confidence: 99%

“…Such large bandwidths are at present only achievable using FBGs. The system performance of 160 Gbit/s TDCs are also summarized in Table 1 and discussed in [22] and [23].…”

Section: Thermally Tuned Tdcsmentioning

confidence: 99%

Section: Comparison With Other Tdc Technologiesmentioning

confidence: 99%

See 2 more Smart Citations

Fiber-based tunable dispersion compensation

Litchinitser¹,

Sumetsky²,

Westbrook³

2007

J Optic Comm Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Compensation schemes for multiple orders of dispersion are well known and include the use of phase modulators [8], tunable fiber Bragg gratings [10][11][12], and concatenation of spans of specialty fibers [13,14]. However, fluctuations of the impairments, mainly due to temperature drifts and stress variations, also occur in long-distance fiber transmission, requiring adaptative solutions able to tune the compensation in real time [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Automatic DGD and GVD compensation at 640 Gb/s based on scalar radio-frequency spectrum measurement

et al. 2013

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We demonstrate what we believe to be the first real-time impairment-cancellation system for groupvelocity dispersion (GVD) and differential group delay (DGD) for a 640 Gb∕s single-channel signal. Simultaneous compensation of two independent parameters is demonstrated by feedback control of separate GVD and DGD compensators using an impairment monitor based on an integrated all-optical radio-frequency (RF) spectrum analyzer. We show that low-bandwidth measurement of only a single tone in the RF spectrum is sufficient for automatic compensation for multiple degrees of freedom using a multivariate optimization scheme.

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