Analysis of signal impairment and crosstalk penalty induced by different types of optical filters in 100 Gbps PM-DQPSK based systems

Chen, Xiaoyong; Horche, Paloma R.; Minguez, Alfredo Martín

doi:10.1109/noc.2014.6996824

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…5(c) gives better performance. To quantitatively analyze the difference between the two eye diagrams, their eye-opening penalties [13] are calculated. Figure 6(f) has about 5 dB more eye-opening penalty than Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of Filter Parameters on a Supercontinuum-Based All-Optical Tunable Thresholder

Zhu¹,

Wang²,

Pu³

et al. 2016

Journal of the Optical Society of Korea

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In this paper, the effects of filter parameters on a supercontinuum-based all-optical thresholder are experimentally investigated. By tuning the filter parameters, the power transfer function and power transmission function are tailored. The experimental results show that a thresholder with short center wavelength has a better power function, and the slope in the middle level of the thresholder increases with increasing bandwidth. Through tuning the filter parameters, the thresholder can achieve a steplike power transfer function for optical thresholding, and a steplike power transmission function for optical self-switching. This makes the supercontinuum-based thresholder more flexible, and allows customization of performance to meet different demands in various applications.

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Section: Resultsmentioning

confidence: 99%

Effect of Filter Parameters on a Supercontinuum-Based All-Optical Tunable Thresholder

Zhu¹,

Wang²,

Pu³

et al. 2016

Journal of the Optical Society of Korea

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show abstract

“…In our previous work [17,18], we have studied filter concatenation effect induced signal impairment and crosstalk induced signal penalties by four types of filters, including Butterworth, Bessel, FBG and F-P filters, in 40 Gbps DQPSK and 100 Gbps PM-DQPSK single-channel systems. In this work, besides investigating the signal penalties originated by the filter concatenation effect and crosstalk, we also study the total signal penalty originated by optical filters at 100 Gbps PM-DQPSK-based optical networks in different cases, including optical filters aligned, misaligned, and láser frequeney shift.…”

Section: Introductionmentioning

confidence: 99%

Signal penalties induced by different types of optical filters in 100Gbps PM-DQPSK based optical networks

Pereda

Horche

2016

Optical Switching and Networking

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Keywords:Optical filter Optical crosstalk Signal impairment Optical communication Polarization multiplexed differential quadrature phase shift keying (PM-DQPSK) Optical filters are crucial elements in optical communication networks. However, they seriously affect the signal quality, especially in the concatenation condition. In this paper, we study and simúlate the signal penalties induced by five types of filters, including Butterworth, Gaussian, Bessel, Fiber Bragg Grating (FBG) and Fabry-Perot (F-P) filters, in order to optimize the optical network performance. Signal penalties, including both filter concatenation effect and filter induced in-band and out-band crosstalk, are analyzed by eye opening penalty (EOP) and Q-penalty. Simulation results show that the Butterworth filter performs best among these four types of filters. Total Q-penalty induced by a Butterworth filter-based demultiplexer/multiplexer pair, considering both filter concatenation effect and crosstalk, is lower than 0.5 dB, when the filter bandwidth is in the range of 42-46 GHz. Simulations done in a 100 Gbps PM-DQPSK optical network indícate that the permitted cascaded number is 14 and 10 with respect to the case of filters aligned and misaligned, respectively. Penalties induced by láser frequency shift are investigated and the performance of the 3rd-order Butterworth filter is compared to the 4th-order superGaussian filter. Finally, discussions of optical filter performances, including insertion loss, reconfigurability and programmability, are presented.

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“…The principle of an SMS structure based on a graded-index MMF is theoretically presented in Section 4. 3.…”

Section: Novel All-fiber Mach-zehnder Interferometers Based On Multim...mentioning

confidence: 99%

Design and optimization of optical, fiber based PSK demodulators for high-bit-rate optical networks

Chen

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and a polarization rotator. The quality of the proposed DQPSK and PM-DQPSK receivers under different perspectives, such as sensitivity, tolerance to severe optical filtering, tolerance to chromatic dispersion and polarization mode dispersion, or behavior under non-ideal conditions. Compared with the conventional receivers, our proposals exhibit similar performances but allow a simpler design which can potentially reduce the cost.The wavelength division multiplexing (WDM) technology used in current optical communications networks requires the use of optical filters with a passband as narrow as possible, and the use of a series of devices that incorporate filters in their architecture, such as multiplexers, demultiplexers, switches, reconfigurable add-drop multiplexers (ROADMs) and optical cross-connects (OXCs). All these devices connected together are equivalent to a chain of filters whose bandwidth becomes increasingly narrow, resulting in distortion to the waveform of the signals. Therefore, in addition to analyzing the impact of optical filtering on signal of 40 Gbps DQPSK and 100 Gbps PM-DQPSK, we study which kind of optical filter minimizes the signal degradation and analyze the maximum number of concatenated filters for maintaining the required quality of the system. Four types of optical filters, including Butterworth, Bessel, FBG and FP, have studied and simulated.

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Analysis of signal impairment and crosstalk penalty induced by different types of optical filters in 100 Gbps PM-DQPSK based systems

Cited by 4 publications

References 16 publications

Effect of Filter Parameters on a Supercontinuum-Based All-Optical Tunable Thresholder

Effect of Filter Parameters on a Supercontinuum-Based All-Optical Tunable Thresholder

Signal penalties induced by different types of optical filters in 100Gbps PM-DQPSK based optical networks

Design and optimization of optical, fiber based PSK demodulators for high-bit-rate optical networks

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