Wavelength initialization employing wavelength recognition scheme in WDM-PON based on tunable lasers

Mun, Sil-Gu; Lee, Eun-Gu; Lee, Jong Hyun; Lee, Sang Soo; Lee, Jyung Chan

doi:10.1016/j.yofte.2014.10.002

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Next-Generation Passive Optical Network 2 (NG-PON2), based on a 40 Gb/s time-and wavelength-division multiplexed PON (TWDM-PON) and point-to-point (P-t-P) WDM-PON, is under study by the ITU-T Study Group 15 and Full Service Access Network group for the purpose of publishing international standards [1]- [8]. The TWDM-PON has received considerable attention because of its flexibility and scalability, which offer economic benefits in access services.…”

Section: Introductionmentioning

confidence: 99%

Effects of Upstream Incoherent Crosstalk Caused by ASE Noise from Tx-Disabled ONUs in XG-PONs and TWDM-PONs

Lee¹,

Rhy²,

Lee³

et al. 2016

ETRI J

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A large incoherent crosstalk (IC) caused by amplified spontaneous emission (ASE) noise power from Txdisabled optical network units and a differential path loss has been shown to degrade upstream transmission performance in time-division multiplexing passive optical networks. This paper considers the IC-induced power penalty of an upstream signal both in an XG-PON and in a TWDM-PON. We investigate the degradation of the extinction ratio and relative intensity noise through a simulation and experiments. For the XG-PON case, we observe a 9.6 dB difference in the level of ASE noise power from Tx-disabled ONUs (hereafter known simply as ASE noise) between our result and the ITU-T XG-PON PMD recommendation. We propose an optical filtering method to mitigate an IC-induced power penalty. In the TWDM-PON case, the IC-induced power penalty is naturally negligible because the ASE noise is filtered by a wavelength multiplexer at the optical line terminal. The results provide design guidelines for the level of ASE noise in both XG-PONs and TWDM-PONs.

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Section: Introductionmentioning

confidence: 99%

Effects of Upstream Incoherent Crosstalk Caused by ASE Noise from Tx-Disabled ONUs in XG-PONs and TWDM-PONs

Lee¹,

Rhy²,

Lee³

et al. 2016

ETRI J

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“…Wavelength division multiplexing (WDM) technology which is proposed to increase the capacity and bandwidth of optical communication has been employed in many applications such as WDM radio over fiber (WDM-RoF) and WDM passive optical network (WDM-PON) [1], [2]. By transmitting simultaneously multiple high speed signals on the different-wavelength optical carriers, the tremendous bandwidth of optical fibers is exploited [3], [4].…”

Section: Introductionmentioning

confidence: 99%

A Novel Optical Frequency-Hopping Scheme for Secure WDM Optical Communications

et al. 2015

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A novel optical frequency-hopping scheme in wavelength-division multiplexing (WDM) systems is proposed to achieve secure communications with high capacity. Frequency hopping is realized by the hopping of digital signals among different channels. In the proposed system, the signal from any source is separated into small segments in the time domain, and the segments are carried by more than one different-wavelength optical carrier. All the optical waves in the proposed WDM system are modulated by signals from two or more sources at different times. The signal from a certain source is also interference to signals from other sources. Hopping, synchronization, de-hopping, and routing are all digitally implemented in field-programmable gate array chips. The system is reconfigurable by software to adapt to different rates. Slow frequency hopping, fast frequency hopping, and intermediate frequency hopping are all available. A demonstration system is designed to support transmission speed from 0 to 10 Gb/s, and a video communication based on it is built to demonstrate the 1-Gb/s optical frequency-hopping system.

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Efficient solution for WDM-PON with low value of BER using NRZ modulation

Verma

Garg

2021

Journal of Optical Communications

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This paper focused on the novel design of receiver side of wavelength division multiplexing passive optical network (WDM-PON). It serves the need for a dramatic change in demand for high data rate beyond 10 gigabits per second (Gbps) at the last mile for a larger coverage area or distance. This increase in demand for higher bandwidth is due to the emerging future technologies like Internet of things (IoT), silicon on chip (SoC), cloud computing, machine learning (ML), and artificial intelligence (AI). Simulation results demonstrated for the different coverage areas which compare the bit error rate (BER), quality (Q)-Factor, and eye height as per the guidelines of ITU-T. It has been predicted that the proposed WDM-PON design supports up to a distance of 60 km. Results have been verified for 40 km, 50 km, 60 km, and 70 km, respectively, at 100 GHz frequency spacing with acceptable BER and better quality (Q)-factor as defined by ITU.

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Wavelength initialization employing wavelength recognition scheme in WDM-PON based on tunable lasers

Cited by 3 publications

References 10 publications

Effects of Upstream Incoherent Crosstalk Caused by ASE Noise from Tx-Disabled ONUs in XG-PONs and TWDM-PONs

Effects of Upstream Incoherent Crosstalk Caused by ASE Noise from Tx-Disabled ONUs in XG-PONs and TWDM-PONs

A Novel Optical Frequency-Hopping Scheme for Secure WDM Optical Communications

Efficient solution for WDM-PON with low value of BER using NRZ modulation

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