Investigation into the temperature dependence of chromatic dispersion in optical fiber

Hamp, Michael J.; Wright, J. W.; Hubbard, M.; Brimacombe, B.

doi:10.1109/lpt.2002.803902

Cited by 62 publications

(32 citation statements)

References 3 publications

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“…The index difference between the core and cladding was kept constant, while the temperature changed. The coefficients values of the cable described are the following [13]: (1) was solved for the chosen conditions and time delay was calculated. Since the time delay and temperature changes are linearly dependent, the signal delay in time can be found.…”

Section: Resultsmentioning

confidence: 99%

Synchronization signal distortion in quantum communication systems

Dubrovskaia¹,

Chivilikhin²

2017

Nanosystems: Phys. Chem. Math.

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An important problem in the practical implementation of fiber optical quantum communication systems is to synchronize the sender and receiver modules using a separate optical channel. The signal visibility in the quantum channel, which contributes to quantum bit error rate, is influenced by the synchronization signal delay. In this work, we investigate the dependence of the synchronization signal parameters on the dispersive effects in the fiber for a subcarrier wave quantum communication system (SCWQC), which is promising for quantum networking applications. The ITU-T G.652D standard single mode optical fiber was used for modeling. The maximum calculated phase mismatch of the synchronization signal for the system operating at 100 km fiber length corresponds to 1.7 ps signal time delay. The results show that dispersion causes significant signal distortion, therefore additional phase adjustment at least every 2.3 hours is required for stable system operation.

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Section: Resultsmentioning

confidence: 99%

Synchronization signal distortion in quantum communication systems

Dubrovskaia¹,

Chivilikhin²

2017

Nanosystems: Phys. Chem. Math.

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“…Our system allows for a compensation rate around 0.5 ps∕ min, which is more than enough for links of a few tens of kilometers. Data for GVD can be found in [17]. The worst fiber studied presented a temperature dependence of −0.003 ps∕nm∕km∕K.…”

Section: Discussionmentioning

confidence: 99%

“…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]. This involves measurement of the impairments and automatic feedback to a tunable compensator.…”

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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“…Thus, light propagation in fiber results in severe stretching of femtosecond pulses after considerably short fiber lengths. The broadening factor of an unchirped Gaussian pulse of root mean square (RMS) width σ 0 due to chromatic dispersion is given by (1) [21]. (1) where β 2 and β 3 are the fiber's second and third order dispersion parameters, respectively, and z is the fiber length.…”

Section: A Chromatic Dispersionmentioning

confidence: 99%