Performance evaluation of optical carrier suppressed RZ-DPSK signal in WDM networks employing OFC

Sibghat Ullah; Feng Tian; Zhang Qi; Amjad Ali; Jahangir Khan; Muhammad Saad Khan; Xiangjun Xin

doi:10.1002/mop.32976

Performance evaluation of optical carrier suppressed RZ-DPSK signal in WDM networks employing OFC

Sibghat Ullah^*, Feng Tian, Zhang Qi, Amjad Ali, Jahangir Khan, Muhammad Saad Khan, Xiangjun Xin

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A new arrangement of optical frequency comb and its deployment in a wavelength division multiplexed optical network is proposed and demonstrated. The generated optical carriers are separated by a frequency spacing of 10GHz and the overall spectra comprise 63 individual optical carriers. These carriers are identified and separated by utilizing rectangle optical filters, and 10Gbps data is modulated on each carrier frequency. The data is modulated using carrier suppressed return to zero differential phase-shift keying (CSRZ-DPSK) modulation technique. Furthermore, the performance analysis of DPSK and CSRZ-DPSK (presuppressed RZ-DPSK, postsuppressed RZ-DPSK, and suppression of multiplexed DPSK signal) are studied in details. In our analysis, it is observed that the three suppression techniques produce almost the same level of suppression, however, the bit error rate and Q factor differ. It has been observed that the postsuppressed DPSK modulation scheme offers more tolerance towards chromatic dispersion and other fiber impairments and nonlinearities such as self-phase modulation and offers better overall performance. The results are analyzed in terms of BER performance, Q-factor, and eye-opening penalty.

Original language	English
Pages (from-to)	839-844
Number of pages	6
Journal	Microwave and Optical Technology Letters
Volume	64
Issue number	5
DOIs	https://doi.org/10.1002/mop.32976
Publication status	Published - May 2022
Externally published	Yes

Keywords

CSRZ-DPSK
WDM networks
carrier suppression
optical frequency comb

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10.1002/mop.32976

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title = "Performance evaluation of optical carrier suppressed RZ-DPSK signal in WDM networks employing OFC",

abstract = "A new arrangement of optical frequency comb and its deployment in a wavelength division multiplexed optical network is proposed and demonstrated. The generated optical carriers are separated by a frequency spacing of 10GHz and the overall spectra comprise 63 individual optical carriers. These carriers are identified and separated by utilizing rectangle optical filters, and 10Gbps data is modulated on each carrier frequency. The data is modulated using carrier suppressed return to zero differential phase-shift keying (CSRZ-DPSK) modulation technique. Furthermore, the performance analysis of DPSK and CSRZ-DPSK (presuppressed RZ-DPSK, postsuppressed RZ-DPSK, and suppression of multiplexed DPSK signal) are studied in details. In our analysis, it is observed that the three suppression techniques produce almost the same level of suppression, however, the bit error rate and Q factor differ. It has been observed that the postsuppressed DPSK modulation scheme offers more tolerance towards chromatic dispersion and other fiber impairments and nonlinearities such as self-phase modulation and offers better overall performance. The results are analyzed in terms of BER performance, Q-factor, and eye-opening penalty.",

keywords = "CSRZ-DPSK, WDM networks, carrier suppression, optical frequency comb",

author = "Sibghat Ullah and Feng Tian and Zhang Qi and Amjad Ali and Jahangir Khan and Khan, {Muhammad Saad} and Xiangjun Xin",

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AU - Ullah, Sibghat

AU - Tian, Feng

AU - Qi, Zhang

AU - Ali, Amjad

AU - Khan, Jahangir

AU - Khan, Muhammad Saad

AU - Xin, Xiangjun

PY - 2022/5

Y1 - 2022/5

N2 - A new arrangement of optical frequency comb and its deployment in a wavelength division multiplexed optical network is proposed and demonstrated. The generated optical carriers are separated by a frequency spacing of 10GHz and the overall spectra comprise 63 individual optical carriers. These carriers are identified and separated by utilizing rectangle optical filters, and 10Gbps data is modulated on each carrier frequency. The data is modulated using carrier suppressed return to zero differential phase-shift keying (CSRZ-DPSK) modulation technique. Furthermore, the performance analysis of DPSK and CSRZ-DPSK (presuppressed RZ-DPSK, postsuppressed RZ-DPSK, and suppression of multiplexed DPSK signal) are studied in details. In our analysis, it is observed that the three suppression techniques produce almost the same level of suppression, however, the bit error rate and Q factor differ. It has been observed that the postsuppressed DPSK modulation scheme offers more tolerance towards chromatic dispersion and other fiber impairments and nonlinearities such as self-phase modulation and offers better overall performance. The results are analyzed in terms of BER performance, Q-factor, and eye-opening penalty.

AB - A new arrangement of optical frequency comb and its deployment in a wavelength division multiplexed optical network is proposed and demonstrated. The generated optical carriers are separated by a frequency spacing of 10GHz and the overall spectra comprise 63 individual optical carriers. These carriers are identified and separated by utilizing rectangle optical filters, and 10Gbps data is modulated on each carrier frequency. The data is modulated using carrier suppressed return to zero differential phase-shift keying (CSRZ-DPSK) modulation technique. Furthermore, the performance analysis of DPSK and CSRZ-DPSK (presuppressed RZ-DPSK, postsuppressed RZ-DPSK, and suppression of multiplexed DPSK signal) are studied in details. In our analysis, it is observed that the three suppression techniques produce almost the same level of suppression, however, the bit error rate and Q factor differ. It has been observed that the postsuppressed DPSK modulation scheme offers more tolerance towards chromatic dispersion and other fiber impairments and nonlinearities such as self-phase modulation and offers better overall performance. The results are analyzed in terms of BER performance, Q-factor, and eye-opening penalty.

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Performance evaluation of optical carrier suppressed RZ-DPSK signal in WDM networks employing OFC

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