A Complete Spectral Polarimeter Design for Lightwave Communication Systems

Wang, S.X.; Weiner, Andrew M.

doi:10.1109/jlt.2006.883614

Cited by 27 publications

(16 citation statements)

References 22 publications

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“…The high power pump and the SUT interact non-linearly along the spool of fiber. The result of this interaction is the active gain filter effect in which, the SUT spectral component matching the Brillouin Shift frequency (11 GHz) over the pump's frequency is amplified [3]. The strongly amplified frequency is detected in the second port of the circulator by a photodetector and then its electrical power level is registered with a data acquisition card (DAQ).…”

Section: Methodsmentioning

confidence: 99%

“…By sweeping the pump TLS frequency and synchronizing the acquisition rate of the card, the power spectrum of the signal is resolved with the resolution of the Brillouin filter, i.e. ~ 10 MHz [3]. Due to the dependence of the Brillouin gain with the polarization stated in eq.…”

Section: Methodsmentioning

confidence: 99%

“…State of Polarization analysis in the optical domain is based on the complete characterization of the SOP for the continuous spectral components of the signal under test, then the Differential Group Delay (DGD) can be measured and the PMD calculated [3]. This polarization resolved analysis of the signal has been already used with low resolution spectral techniques and systems that require either previous alignment or manipulation of the signal polarization state [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…This polarization resolved analysis of the signal has been already used with low resolution spectral techniques and systems that require either previous alignment or manipulation of the signal polarization state [3][4][5]. Recent works proposed the direct characterization of PMD by obtaining measurements of the DGD over in-service channels by analyzing the power difference in two coherent detectors, after the signal is split in a polarization beam splitter and beat with a local oscillator [6].…”

Section: Introductionmentioning

confidence: 99%

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Novel method for the measurement of the wavelength-resolved high-resolution polarization state of optical signals and application to the monitoring of communication signals

Villafranca¹,

Sevillano

Pellejer³

et al. 2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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We present a method for the characterization of the polarization state of the optical spectrum components of an optical signal with high resolution (80 fm). Polarization dependence of stimulated Brillouin scattering is used to obtain the projections of the high-resolution optical spectrum to a state determined by controlling the polarization state of the pump signal. Combining data from different polarizations we extract the wavelengthresolved optical polarization state of the signals. Applications of this measurement to the study of polarization effects in communication signals are also presented.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Novel method for the measurement of the wavelength-resolved high-resolution polarization state of optical signals and application to the monitoring of communication signals

Villafranca¹,

Sevillano

Pellejer³

et al. 2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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show abstract

“…The DOP after compensation DOP(T 1/2 , T 1/4 , W) can be approximated from the SOP (S' 1 (Z), S' 2 (Z), S' 3 (Z)) monitored by the spectral polarimeter [5] …”

Section: Introductionmentioning

confidence: 99%

Improvement of BER performance by active PMD compensation employing the steepest descent-based tracking algorithm

Tanizawa

Hirose

2009

2009 14th OptoElectronics and Communications Conference

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We report improvements of signal quality by steepestdescent based tracking compensation of fast PMD fluctuations. Transmission simulations at 160 Gb/s show that bit-error-ratio characteristics are improved by 1.7 dB. IntroductionAdaptive polarization mode dispersion (PMD) compensation is required for high-speed optical fiber transmission over 100 Gb/s. The active compensation is achieved by a tunable PMD compensator which is feedback-controlled through the PMD monitoring [1]. The typical feedback control is based on the hillclimbing method. However, it is difficult for the hillclimbing-based optimization to achieve effective compensation since the state of polarization (SOP) of the transmission fiber occasionally changes faster than the optimization speed of the compensator. It is reported that the SOP can change faster than 10 ms [2].We have therefore proposed adaptive tracking compensation algorithm based on the steepest descent method (SDM) for effective compensation of fast PMD fluctuation, and demonstrated in 160 Gb/s transmission simulations [3]. In our proposal, the partial derivatives required for the SDM approach are calculated approximately by Mueller matrices with the monitoring of SOP before a tunable PMD compensator. The stable degree of polarization (DOP) was achieved under the conditions that the SOP of the fiber changes at the rate of 0.13 rad per 4 ms in average.In this paper, we report the detailed performances of the proposed method when the interval of the SOP variation changes from 1 to 5 ms. We measured biterror-ratio (BER) characteristics by transmission simulations at 160 Gb/s. The optical signal-to-noise ratio (OSNR) required for bit-error-ratio (BER) = 10 -3 is improved by about 1.7 dB compared to the conventional hill-climbing-based optimization.

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Measurement of Optical Fiber Laser

Wang

Guo

et al. 2018

Handbook of Optical Fibers

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A Complete Spectral Polarimeter Design for Lightwave Communication Systems

Cited by 27 publications

References 22 publications

Novel method for the measurement of the wavelength-resolved high-resolution polarization state of optical signals and application to the monitoring of communication signals

Novel method for the measurement of the wavelength-resolved high-resolution polarization state of optical signals and application to the monitoring of communication signals

Improvement of BER performance by active PMD compensation employing the steepest descent-based tracking algorithm

Measurement of Optical Fiber Laser

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