Colorless reception of a single 100Gb/s channel from 80 coincident channels via an intradyne coherent receiver

Nelson, L.E.; Zhou, Xiang; Isaac, R.; Lin, Yu-Min; Chon, Joseph C.; Way, W.I.

doi:10.1109/ipcon.2012.6358581

Cited by 5 publications

(10 citation statements)

References 6 publications

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“…The cost per port of this 8 × 32 VS-MCS would be very close to that of an 8 × 16 VS-MCS. Note that in the case of Q 32, which implies that there are up to 32 coincident λ's on each ICR, the incurred OSNR penalty should normally be well below 0.5 dB [5].…”

Section: B Optical Power Budget Constraintmentioning

confidence: 99%

“…Each of the eight MCS input ports is connected to one of the eight directions. A MCS achieves "colorless" drop via coherent detection without prefiltering, which includes the use of an intradyne coherent receiver (ICR) and a tunable laser serving as a local oscillator [5]. A MCS achieves "directionless" status because any output port can drop any input signals from any direction via a 1 × M switch.…”

Section: Introductionmentioning

confidence: 99%

“…Ideally, Q should be as large as possible so that the upper layer WSS cost can be shared by more drop ports. However, Q is limited by the blocking rate due to the contention point at the output of each 8 × 1 WSS , the minimum received optical power per channel, and the maximum number of coincident channels that an ICR can handle [5]. Those colorless and directionless drop (CDD) banks in Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wavelength Contention-Free via Optical Bypass Within a Colorless and Directionless ROADM [Invited]

Way

Ji²,

Patel³

2013

J. Opt. Commun. Netw.

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A conventional colorless and directionless reconfigurable optical add/drop multiplexer (ROADM) architecture is modified to add intra-node optical bypass and achieve either statistical or absolute contention-free performance. The contention-free performance is accomplished without relying on external transponders and optical transport network (OTN) switches. Furthermore, the overall ROADM has a smaller size, lower power consumption, and lower cost than those of conventional colorless, directionless, and contentionless ROADMs.

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Section: B Optical Power Budget Constraintmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Wavelength Contention-Free via Optical Bypass Within a Colorless and Directionless ROADM [Invited]

Way

Ji²,

Patel³

2013

J. Opt. Commun. Netw.

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“…However, the high optical complexity of a polarization diversity intradyne coherent receiver makes its full monolithic integration challenging, mainly due to the PBS. Thus, hybrid implementations (typically using free-space optical components) are commonly employed [8]- [10]. To date, although there are few reported studies regarding the fully monolithically integrated polarization-and phase-diverse intradyne coherent receiver [11]- [13], they are not sufficiently mature and cost-effective for volume production.…”

Section: Introductionmentioning

confidence: 99%

Polarization-Insensitive Single-Balanced Photodiode Coherent Receiver for Long-Reach WDM-PONs

Erkılınç

Lavery

Shi

et al. 2016

J. Lightwave Technol.

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In an access network based on a passive optical network architecture, coherent detection is attractive since it allows for high receiver sensitivity coupled with inherent frequency selectivity. Nevertheless, solutions employed in core networks are prohibitively complex and costly, requiring the optical complexity of the coherent receivers to be reduced to make them feasible for access networks. For monolithic integration, a key challenge is posed by the polarization beam splitter (PBS). If however the PBS is removed, the receiver needs to be re-designed to be insensitive to the incoming polarization state of the received signal. In this paper, we experimentally demonstrate a polarization-insensitive (i.e., polarization-independent) coherent receiver for the optical network unit (ONU) in passive optical networks (PONs). The receiver consists of only a 3 dB coupler and a single balanced photodiode (BPD) such that the complexity is comparable to a direct detection receiver. The proposed cost-effective coherent receiver is implemented by using the Alamouti polarizationtime block coding (PTBC) scheme combined with heterodyne detection. To verify the technique, the Alamouti-coded OFDM signal is rotated over the full Poincaré sphere. Compared to the DP-OFDM signal operating at a net bit rate of 10 Gb/s per polarization (a gross bit rate of 10.7 Gb/s including a 7% FEC overhead), only a 0.6 dB sensitivity degradation is observed. The sensitivity at the FEC threshold, assumed to be 4 × 10 −3 , is measured to be -41.5 dBm (56 photons-per-bit) on a 25-GHz grid. Following this, different channel spacings are investigated and, the signal is transmitted over 80 km of standard single mode fiber (SSMF) in a long-reach (LR) wavelength division multiplexed (WDM) PON system. The loss budgets are found to be 43.0 dB and 42.8 dB for 50-and 25-GHz grids, respectively.Index Terms-Optical access, coherent detection, polarization, Alamouti, polarization-time block code (PTBC), wavelength division multiplexing (WDM), passive optical network (PON).

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“…Later in [16], Zhang et al presented design guidelines and performance limits of colorless reception employing balanced detection based on simulation and analytical predictions. More recently in [17], the authors demonstrated experimentally the use of an integrated PLC-based balanced coherent receiver for colorless reception of one 100G channel among 80 WDM channels.…”

Section: Introductionmentioning

confidence: 99%

Analytical and experimental performance evaluation of an integrated Si-photonic balanced coherent receiver in a colorless scenario

Morsy-Osman¹,

Chagnon²,

Xu³

et al. 2014

Opt. Express

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We study analytically and experimentally the performance limits of a Si-photonic (SiP) balanced coherent receiver (CRx) co-packaged with transimpedance amplifiers (TIAs) in a colorless WDM scheme. Firstly, the CRx architecture is depicted and characterization results are presented. Secondly, an analytical expression for the signal-to-noise ratio (SNR) at the CRx output is rigorously developed and various noise sources in the context of colorless reception are outlined. Thirdly, we study experimentally the system-level CRx performance in colorless reception of 16 × 112 Gbps PDM-QPSK WDM channels. Using a 15.5 dBm local oscillator (LO) power, error free transmissions over 4800 and 4160 km at received powers of -3 and -21 dBm per channel, respectively, were achieved in a fully colorless and preamplifierless reception. Next, a set of measurements on one of the center WDM channels is performed where the LO power, received signal power, distance, and number of channels presented to the CRx are swept to evaluate the performance limits of colorless reception. Results reveal that the LO beating with optical noise incoming with the signal is a dominant noise source regardless of received signal power. In the high received signal power regime (~0 dBm/channel), the self-beat noise from out-of-band (OOB) channels is an additional major noise source especially for small LO-to-signal power ratio, short reach and large number of OOB channels. For example, at a received signal power of 0 dBm/channel after 1600 km transmission, the SNR difference between the fully filtered and colorless scenarios, where 1 and 16 channels are passed to the CRx respectively, grows from 0.5 to 3.3 dB as the LO power changes from 12 to 0 dBm. For low received power (~-12 dBm/channel), the effect of OOB channels becomes minor while the receiver shot and thermal noises become more significant. We identify the common mode rejection ratio (CMRR) and sensitivity as the two important CRx specifications that impact the performance at high and low received signal power regimes, respectively. Finally, an excellent match between experimental and analytical SNRs is proven after the derived SNR model is fitted to the experimental data in a least-squares sense. The model is then used to predict that the CRx can operate colorlessly for a fully populated WDM spectrum with 80 channels provided that the LO-to-signal power ratio is properly set.

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Colorless reception of a single 100Gb/s channel from 80 coincident channels via an intradyne coherent receiver

Cited by 5 publications

References 6 publications

Wavelength Contention-Free via Optical Bypass Within a Colorless and Directionless ROADM [Invited]

Wavelength Contention-Free via Optical Bypass Within a Colorless and Directionless ROADM [Invited]

Polarization-Insensitive Single-Balanced Photodiode Coherent Receiver for Long-Reach WDM-PONs

Analytical and experimental performance evaluation of an integrated Si-photonic balanced coherent receiver in a colorless scenario

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