Polarization-Independent Heterodyne DPSK Receiver Based on 3x3 Coupler for Cost-Effective udWDM-PON

Tabares, Jeison; Polo, Víctor; Prat, Josep

doi:10.1364/ofc.2017.th1k.3

Cited by 17 publications

(12 citation statements)

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“…Therefore, the use of a single laser in the ONU, operating as both the upstream signal source and the downstream signal LO, is not possible. To regain the phase diversity, Tabares et al [27] have modified the Ciaramella-Rx by replacing the squaring operation with the linear combination of the three output photocurrents to remove the direct detection terms (identical to Cano-IntRx w/PS), as explained in [41] whilst employing the same optical front-end design as the Ciaramella-Rx, as shown in Fig. 3.…”

Section: B Description Of the Low Complexity Coherent Receiversmentioning

confidence: 99%

“…Such a limitation in the achievable spectral efficiency and the low resilience to dispersion affect the possibility of scaling the Ciaramella-Rx's operation to higher data rates. As discussed in Section II-B, the squaring operation in Ciaramella-Rx was removed to regain the phase diversity in the Tabares-HetRx [27].…”

Section: Comparison Of Sensitivity Limits Of Practical Low Complexmentioning

confidence: 99%

“…Moreover, the Tabares-HetRx was employed in an ultra-dense WDM PON system operating at 1.25 Gb/s using DBPSK signalling, exhibiting a sensitivity of -49 dBm (78.5 PPB) at the HD-FEC threshold of 10 −3 [27]. The real-time implementation of Ciaramella-Rx, using simple analogue processing without the need for DSP or ADC, was demonstrated for a 1.25 Gb/s OOK PON system, achieving a sensitivity of -51 dBm (49.6 PPB) at a pre-HD-FEC BER of 2 × 10 −3 [50].…”

Section: Experimentally Achieved Receiver Sensitivities Using Low mentioning

confidence: 99%

“…In this paper, initially, power-efficient modulation formats are discussed for applications in access networks, together with the proposed polarization-independent high sensitivity, yet low complexity, coherent receiver designs. Following this, a numerical analysis of the shot noise limit of the recently proposed polarization-independent coherent receiver, implemented using a polarization-time block coding scheme combined with heterodyne reception [22], is presented, and its sensitivity performance is compared with those proposed by other research groups in terms of number of photons-per-bit [23]- [27]. Additionally, the performance of two recently proposed simplified coherent receivers, exhibiting the lowest possible optical complexity in terms of required optical components, comparable to that of a direct detection receiver, is assessed in the presence of local oscillator relative intensity noise (LO-RIN).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Low Complexity Coherent Receivers for UDWDM-PONs ($\lambda$-to-the-User)

Erkılınç

Lavery

Shi

et al. 2018

J. Lightwave Technol.

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It is predicted that demand in future optical access networks will reach multigigabit/s per user. However, the limited performance of the direct detection receiver technology currently used in the optical network units at the customers' premises restricts data rates per user. Therefore, the concept of coherentenabled access networks has attracted attention in recent years, as this technology offers high receiver sensitivity, inherent frequency selectivity, and linear field detection enabling the full compensation of linear channel impairments. However, the complexity of conventional (dual-polarization digital) coherent receivers has so far prevented their introduction into access networks. Thus, to exploit the benefits of coherent technology in access networks, low complexity coherent receivers, suitable for implementation in ONUs, are needed. In this paper, the recently proposed low complexity coherent (i.e., polarization-independent Alamouti-coding heterodyne) receiver is, for the first time, compared in terms of its minimum receiver sensitivity with five previously reported receiver designs, including a detailed discussion on their advantages and limitations. It is shown that, of all the configurations considered, the Alamouti-coding based receiver approach allows the lowest number of photons per bit (PPB) transmitted (with a lower bound of 15.5 PPB in an ideal implementation of the system), while requiring the lowest optical receiver hardware complexity (in terms of the optical component count). It also exhibits comparable complexity to the currently deployed direct-detection receivers, which typically require over 1000 PPB. Finally, a comparison of experimentally achieved receiver sensitivities and transmission distances using these receivers is presented. The highest spectral efficiency and longest transmission distance at the highest bit rate (10 Gb/s) was reported using the Alamouti-coding receiver, which is also the only one, to date, to have been demonstrated in a full system bidirectional transmission.

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Section: B Description Of the Low Complexity Coherent Receiversmentioning

confidence: 99%

Section: Comparison Of Sensitivity Limits Of Practical Low Complexmentioning

confidence: 99%

Section: Experimentally Achieved Receiver Sensitivities Using Low mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Low Complexity Coherent Receivers for UDWDM-PONs ($\lambda$-to-the-User)

Erkılınç

Lavery

Shi

et al. 2018

J. Lightwave Technol.

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show abstract

“…If the received signal SOP is not correctly aligned with that of the local oscillator (LO), a loss of signal results. A number of solutions for this problem have been proposed [6][7][8]. The use of Alamouti coding [9] in a simple polarization-time block coding of the signal has been proposed and demonstrated to achieve polarization-independent coherent reception [10][11][12].…”

Section: Reduced-complexity Coherent Receivers For Onusmentioning

confidence: 99%

Transmission Schemes for Future Access Networks

Killey

Erkılınҫ

Lavery

et al. 2018

Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF)

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Integrated Optical-Wireless Interface and Detection

Konstantinou

Xue

Shivan

et al. 2021

Enabling 6G Mobile Networks

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Polarization-Independent Heterodyne DPSK Receiver Based on 3x3 Coupler for Cost-Effective udWDM-PON

Cited by 17 publications

References 2 publications

Comparison of Low Complexity Coherent Receivers for UDWDM-PONs ($\lambda$-to-the-User)

Comparison of Low Complexity Coherent Receivers for UDWDM-PONs ($\lambda$-to-the-User)

Transmission Schemes for Future Access Networks

Integrated Optical-Wireless Interface and Detection

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