Investigation of Hybrid S-band Amplifier Performance with 8-channel × 10 Gbaud 16-QAM signals

Guo, Chunyu; Shamsshooli, Afshin; Akasaka, Youichi; Palacharla, Paparao; Vasilyev, Michael

doi:10.1109/ecoc52684.2021.9605930

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…Another function of OPAs is wavelength conversion performing by utilizing the phaseconjugated copy, namely idler light, generated with signal amplification. The simultaneous wavelength conversion between telecommunication bands allows existing optical components for conventional bands to be used for new bands [11][12][13][14][15]. Configurations that apply an OPA-based wavelength converter to S-band amplifier [11], multi-band Tx/Rx [12][13][14], and optical cross-connect [15] have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

“…The simultaneous wavelength conversion between telecommunication bands allows existing optical components for conventional bands to be used for new bands [11][12][13][14][15]. Configurations that apply an OPA-based wavelength converter to S-band amplifier [11], multi-band Tx/Rx [12][13][14], and optical cross-connect [15] have been demonstrated. In addition, the ultrafast response of nonlinear optical effects at the femtosecond scale [16] enables the OPA to cope with sudden changes in input power due to dynamic channel add-drop [9].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Gain Saturation on Wideband WDM Signal in PPLN-Based Optical Parametric Amplifier

Shimizu

Kobayashi

Kazama

et al. 2023

J. Lightwave Technol.

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The periodically poled LiNbO3 (PPLN) based optical parametric amplifier (OPA) is a technology that contributes to the construction of multi-band wavelength-division multiplexing (WDM) optical networks thanks to its wide amplification bandwidth and wavelength conversion function. In addition, the fast response of the OPA means it is unaffected by sudden changes of wavelength channels due to dynamic channel add-drop. However, such fast response leads to nonlinear signal distortion when operating in the gain saturation region. This paper experimentally investigates the conversion of gain saturation into the nonlinear amplitude distortion in a 64-Gbaud 64QAM WDM signal. We characterized the input power tolerance of a PPLNbased OPA in wideband WDM applications and found that the nonlinear amplitude distortion can be suppressed by increasing the number of WDM channels. For a 75-GHz-spacing 64-channel WDM configuration, the total input power tolerance was improved by ~10 dB compared to a single-channel case. We also confirmed that there is almost no wavelength dependence of the effect of gain saturation on the signal distortion. These results show that PPLN-based OPAs have a wide total input power range for amplifying wideband WDM signals in terms of the nonlinear distortion.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Gain Saturation on Wideband WDM Signal in PPLN-Based Optical Parametric Amplifier

Shimizu

Kobayashi

Kazama

et al. 2023

J. Lightwave Technol.

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show abstract

“…Another feature of the OPA is a wavelength conversion (spectral inversion) function utilizing the idler light generated simultaneously with the signal amplification. Inter-band wavelength conversion by OPAs enables conventional optical components to be used for additional bands as well, and its applications to multiband transceivers and optical cross-connects have been investigated [27][28][29][30]. Therefore, U-band transmission is made possible with commercially available transceivers and other components by using inter-band wavelength conversion, and the demonstration of Ref.…”

Section: Introductionmentioning

confidence: 99%

L- and U-Band WDM Transmission Over 6 THz Using PPLN-Based Optical Parametric Amplification and Wavelength-Band Conversion

Shimizu,

Kobayashi,

Kawai

et al. 2024

J. Lightwave Technol.

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We demonstrate a 38.4-Tbps (60 ch. × 640 Gbps) wavelength-division multiplexing (WDM) transmission across 5 × 80-km G.654.E single-mode fibers over 6 THz within L-and U-bands. The U-band (1625-1675 nm) is promising as a next transmission band for multiband networks because of its low transmission loss compared with E-and O-bands, but there are few demonstrations of coherent WDM transmission with the U-band. One reason is that promising optical components, especially for optical transceivers, are underdeveloped for the U-band. An optical parametric amplifier (OPA) using a periodically poled LiNbO3 (PPLN) waveguide has wide-gain bandwidth and wavelength conversion function, which allows the use of commercially available optical components for new bands. We achieve L-and U-band digital coherent WDM transmission within 1597.2-1649.9 nm (181.7-187.7 THz) using PPLN-based optical parametric inline amplification and wavelength-band conversion.

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0.9-dB/m Single-Mode Silicon Nitride Nonlinear Integrated Waveguides for Continuous-Wave Wavelength Conversion

Zhao,

Girardi,

Shekhawat

et al. 2023

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM)

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Investigation of Hybrid S-band Amplifier Performance with 8-channel × 10 Gbaud 16-QAM signals

Cited by 5 publications

References 5 publications

Effect of Gain Saturation on Wideband WDM Signal in PPLN-Based Optical Parametric Amplifier

Effect of Gain Saturation on Wideband WDM Signal in PPLN-Based Optical Parametric Amplifier

L- and U-Band WDM Transmission Over 6 THz Using PPLN-Based Optical Parametric Amplification and Wavelength-Band Conversion

0.9-dB/m Single-Mode Silicon Nitride Nonlinear Integrated Waveguides for Continuous-Wave Wavelength Conversion

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