DQPSK Directly Phase Modulated DFB for Flexible Coherent UDWDM-PONs

Cano, Iván N.; Lerín, Adolfo; Prat, Josep

doi:10.1109/lpt.2015.2478972

Cited by 22 publications

(7 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Content may change prior to final publication. distributed feedback lasers (DFB) [8,9], directly-phase modulated reflective semiconductor amplifiers (RSOA) [10,11], intensity modulated vertical cavity surface emitting lasers (VCSEL) [12] or directly-phase modulated VCSELs [13]. In addition, several coherent receiver technologies have also been proposed and developed.…”

Section: Introductionmentioning

confidence: 99%

Real-time 10Gbps Polarization Independent Quasicoherent Receiver for NG-PON2 Access Networks

Altabás¹,

Valdecasa²,

Didriksen³

et al. 2018

Optical Fiber Communication Conference

View full text Add to dashboard Cite

In this paper, we propose and test experimentally a real-time 10 Gbps polarization independent quasicoherent receiver for NG-PON2 access networks. The proposed 10 Gbps quasicoherent receiver exhibits a sensitivity of -35.2 dBm after 40 km SSMF transmission with a commercial generic EML as transmitter. This sensitivity means a 14.9 dB improvement over a direct detection scheme with a photodiode after 40 km SSMF transmission. Therefore, the use of the proposed 10 Gbps quasicoherent receiver with the tested EML will provide a power budget of 35.64 dB (class E2) and a splitting ratio of 128 after the 40 km SSMF transmission. Finally, the proposed 10 Gbps quasicoherent receiver allows a colorless and optical filterless operation because wavelength selection is done by tuning the local oscillator wavelength and using electrical intermediate frequency filtering.

show abstract

Section: Introductionmentioning

confidence: 99%

Real-time 10Gbps Polarization Independent Quasicoherent Receiver for NG-PON2 Access Networks

Altabás¹,

Valdecasa²,

Didriksen³

et al. 2018

Optical Fiber Communication Conference

View full text Add to dashboard Cite

show abstract

“…The residual IM was about 1.5 dB [26], achieving a penalty with respect to external modulation of only 2 dB. An RX sensitivity of -52 dBm was obtained with intradyne detection based on a 3x3 coupler, at a BER=10 -3 with off-line processing; it attained a channel spacing of only 3 GHz (24 pm) and negligible phase noise effect [24,27]; by extending the technique to QPSK with 4 current levels, 5 Gbps was reached [28]. At the same time, ASK direct modulation and coherent detection have been also demonstrated, also using a coherent receiver based on a 3x3 symmetric coupler.…”

Section: A Direct Phase Modulationmentioning

confidence: 93%

Technologies for Cost-Effective udWDM-PONs

Prat

Cano

Presi

et al. 2016

J. Lightwave Technol.

Self Cite

View full text Add to dashboard Cite

Abstract-New technologies for ultra-dense WDM-PON (udWDM-PON), enabled by coherent techniques and low cost devices, are developed for an efficient utilization of the optical spectrum, revealing that the "Wavelength-to-the-User" concept can be feasible. In this work, an udWDM-PON with only 6.25 GHz channel spacing is implemented with conventional DFB lasers, for a splitter-based PON infrastructure with 256 ONUs. The results of the analysis of udWDM access network architecture with respect to their associated complexity, cost and migration scenarios, exhibit the potential for higher aggregate throughput, higher split ratios and node consolidation, when compared to competing technologies.Index Terms-Fiber optical communications, fiber-to-thehome, access networks, PON, WDM.

show abstract

“…In order to minimise the complexity of the DFB drive σ P for the purpose of chirp modulation, the phase response of the directly modulated DFB section can be therefore examined [55] and flattened through an analogue equaliser [56], which simplifies the pre‐coding that is otherwise required for the direct phase modulation [57]. This method of phase‐modulated signalling is also compatible with higher modulation efficiencies [58] and allows to generate, together with the EAM of the EML, quadrature amplitude modulated (QAM) formats that exploit the entire inphase/quadrature (I/Q) plane, such as 8‐ary amplitude/phase shift keying [22]. No interferometric modulators are required for this purpose, which relaxes the driving and biasing requirements to obtain a stable point of operation.…”

Section: Applications As Optical Transmittermentioning

confidence: 99%

Electroabsorption‐modulated laser as optical transmitter and receiver: status and opportunities

Schrenk

2020

IET Optoelectronics

View full text Add to dashboard Cite

DQPSK Directly Phase Modulated DFB for Flexible Coherent UDWDM-PONs

Cited by 22 publications

References 16 publications

Real-time 10Gbps Polarization Independent Quasicoherent Receiver for NG-PON2 Access Networks

Real-time 10Gbps Polarization Independent Quasicoherent Receiver for NG-PON2 Access Networks

Technologies for Cost-Effective udWDM-PONs

Electroabsorption‐modulated laser as optical transmitter and receiver: status and opportunities

Contact Info

Product

Resources

About