Re-modulated technology of WDM-PON employing different DQPSK downstream signals

Gao, Chao; Xin, Xiangjun; Yu, Chongxiu

doi:10.1007/s11801-012-2328-0

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Four-ary DPSK has already been proposed for upstream remodulaiton. 35,36 Four-ary DPSK requires delay interferometers (DIs) to receive. DIs are not transparent to the bit rate.…”

Section: Discussionmentioning

confidence: 99%

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A novel multi‐ary PolSK modulation for downstream signal in wavelength reusing wavelength division multiplexing passive optical network

Qiu,

Lu,

et al. 2024

Micro & Optical Tech Letters

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A novel modulation, that is, multi‐ary polarization shift keying (PolSK) modulation is proposed for wavelength division multiplexing passive optical networks (PONs) to achieve colorless optical network units. The downstream signal applies the proposed multi‐ary PolSK to eliminate the induced crosstalk to the remodulated amplitude shift keying upstream signal. Different from traditional PolSK, there are more than two polarization states in the proposed multi‐ary PolSK, so it provides higher bit rates and spectra efficiency. Four‐ary and 6‐ary PolSK are demonstrated and evaluated by simulation. The results show the proposed multi‐ary PolSK supports high‐speed downstream signal in future PONs with very low crosstalk induced to the remodulated upstream signal.

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“…Four-ary DPSK has already been proposed for upstream remodulaiton. 35,36 Four-ary DPSK requires delay interferometers (DIs) to receive. DIs are not transparent to the bit rate.…”

Section: Discussionmentioning

confidence: 99%

“…The complexity is also a little increased to generate and receive multi‐ary signals. Four‐ary DPSK has already been proposed for upstream remodulaiton 35,36 . Four‐ary DPSK requires delay interferometers (DIs) to receive.…”

Section: Discussionmentioning

confidence: 99%

A novel multi‐ary PolSK modulation for downstream signal in wavelength reusing wavelength division multiplexing passive optical network

Qiu,

Lu,

et al. 2024

Micro & Optical Tech Letters

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A channel estimation algorithm for optical orthogonal frequency division multiplexing systems

Wang

Zou

Wei-dong

et al. 2013

Optoelectron. Lett.

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Research on Transmission Performance of Different Modulation Formats Based on Re-modulation WDM-PON

Feng

2016

Journal of Optical Communications

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Dispersion and nonlinear effects will increase the effect on the system when the optical information transmits in high speed and long distance. The new optical modulation technology can reduce the attenuation caused by transmission procedure. In this paper, OptiSystem and Matlab were combined to set a model by comparing the dispersion tolerance and nonlinear effect of different code modulation formats. After that, the better performance code of IRZ (Inverse Return-to-Zero) and DQPSK (Differential Quadrature Phase Shifted Keying) will be used to study their properties in 10Gbit/s re-modulation WDM-PON access model. The DQPSK was used in downlink, IRZ modulation was used in uplink adopts the IRZ modulation was used in 10 Gbit/s re-modulation WDM passive optical network access model uplink on the basis of the above method. A simulation analysis is also made between the different duty ratios of the DQPSK and IRZ. Compared with the NRZ type, the IRZ has a better anti-dispersion property, channel crosstalk suppression ability and higher spectrum efficiency although it costs 3 dB powers. At the same time, it simplifies the structure of the ONU on the premise of not increasing the power and the cost. So, it fits the large capacity requirements between user stations and the central office in the future.

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Re-modulated technology of WDM-PON employing different DQPSK downstream signals

Cited by 3 publications

References 10 publications

A novel multi‐ary PolSK modulation for downstream signal in wavelength reusing wavelength division multiplexing passive optical network

A novel multi‐ary PolSK modulation for downstream signal in wavelength reusing wavelength division multiplexing passive optical network

A channel estimation algorithm for optical orthogonal frequency division multiplexing systems

Research on Transmission Performance of Different Modulation Formats Based on Re-modulation WDM-PON

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