Enabling S-C-L-Band Systems with Standard C-Band Modulator and Coherent Receiver using Nonlinear Predistortion

Emmerich, Robert; Sena, Matheus; Elschner, Robert; Schmidt‐Langhorst, Carsten; Sackey, Isaac; Schubert, C.; Freund, Ronald

doi:10.1364/ofc.2021.f4d.7

Cited by 4 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here, we focus on the system aspects of UWB modulator operation. Due to the unavailability of UWB modulators, there have been efforts to use C-band modulators in UWB operation over the S-, C-, and L-bands and quantify their performance [104]. Depending on the material and design of the C-band modulators, there may be large differences in their suitability for out-of-band use.…”

Section: Mitigation Of Transceiver Impairmentsmentioning

confidence: 99%

Ultrawideband Systems and Networks: Beyond C + L-Band

et al. 2022

View full text Add to dashboard Cite

In the evolution of optical networks, spectral efficiency (SE) enhancement has been the most cost-efficient and thus the main driver for capacity increase for decades. As a result, the development of optical transport systems has been focused on the C-and L-bands, where silica optical fiber exhibits the lowest attenuation, and erbium-doped fiber amplifiers provide an efficient solution to compensate for the optical loss. With a gradual maturity in the SE growth, however, the extension of the optical bandwidth beyond the C + L-band is expected to play a significant role in future capacity upgrades of optical networks and, thus, attract increasing research interests. In this article, we discuss the merits and challenges of ultrawideband optical transport systems and networks beyond conventional bands. KEYWORDS | Optical communication; optical network and switching; optical transceiver (TRx); Raman amplification; ultrawideband (UWB) transmission; wavelength conversion; wavelength-division multiplexing (WDM).

show abstract

Section: Mitigation Of Transceiver Impairmentsmentioning

confidence: 99%

Ultrawideband Systems and Networks: Beyond C + L-Band

et al. 2022

View full text Add to dashboard Cite

show abstract

“…In this contribution we extend our previous experimental work [9] by including a new section to further describe the applied end-to-end electro-optical Volterra-based coherent system identification (SI). We also incorporate in our analysis additional insertion loss measurements of the used C-band modulator and characterize the responsivity of the coherent receiver over the S-C-L-band.…”

mentioning

confidence: 98%

Enabling S-C-L-Band Systems With Standard C-Band Modulator and Coherent Receiver Using Coherent System Identification and Nonlinear Predistortion

Emmerich

Sena

Elschner

et al. 2022

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

One promising and competitive solution to keep up with the rapid growth in data traffic while at the same time addressing increasing network cost, is the efficient reuse of legacy optical fiber infrastructure. This is highly desirable as deployed single mode fibers represent a valuable asset in the network while new installations would require high additional investments. Multiband (MB) or ultra-wideband (UWB) systems, combined with high symbol rates and higher-order modulation formats, are promising solutions to capitalize the already existing fiber plants. In this contribution, we experimentally demonstrate S-C-L-band reception with 64 GBd dual-polarization (DP) 64-ary and 32-ary quadratureamplitude modulation (QAM) while using C-band components off-the-shelf (COTS) such as DP-IQ modulators and coherent receivers. To achieve such broadband operation with components that are not optimized for an out-of-band use, mitigation of the associated penalties is decisive. To this end, we apply an end-toend electro-optical Volterra-based coherent system identification followed by nonlinear digital predistortion of the transmitter. We achieve 150-nm operation bandwidth of the transmission system by performing only a single identification and predistortion at a reference wavelength of 1500 nm.

show abstract

Impact of Wavelength-Dependent I/Q Imbalances of Standard C-Band Transceivers in Rate-Adaptive Multiband Systems

Rosa

Emmerich

Sena

et al. 2021

2021 European Conference on Optical Communication (ECOC)

View full text Add to dashboard Cite

Enabling S-C-L-Band Systems with Standard C-Band Modulator and Coherent Receiver using Nonlinear Predistortion

Abstract: We experimentally demonstrate S-band reception of 64-GBd PDM-64/32-QAM using standard C-band components. Operation below SD-FEC is enabled by nonlinear transmitter pre-distortion based on coherent system identification supporting up to 150 nm bandwidth in the S-C-L-band.

Cited by 4 publications

References 4 publications

Ultrawideband Systems and Networks: Beyond C + L-Band

Ultrawideband Systems and Networks: Beyond C + L-Band

Enabling S-C-L-Band Systems With Standard C-Band Modulator and Coherent Receiver Using Coherent System Identification and Nonlinear Predistortion

Impact of Wavelength-Dependent I/Q Imbalances of Standard C-Band Transceivers in Rate-Adaptive Multiband Systems

Contact Info

Product

Resources

About