Channel Capacity of Wavelength Division Multiplexing-Based Brillouin Optical Time Domain Sensors

We review the main results obtained with our recently introduced passively fundamental mode-locked Er : Yb :glass lasers mainly in the context of telecom applications, and we discuss their key enablers. Specifically, we focus on the aspects of the lasers for application in the time-domain for optical time-division multiplexing and in the wavelength domain for dense wavelength-division-multiplexing.

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Research Advances in Wavelength-Division-Multiplexing Passive Optical Network Monitoring with Tunable Optical Time-Domain Reflectometry

Laser & Optoelectronics Progress ◽

10.3788/lop52.060006 ◽

2015 ◽

Vol 52 (6) ◽

pp. 060006

Author(s):

孙菲 Sun Fei ◽

谢亮 Xie Liang ◽

漆晓琼 Qi Xiaoqiong ◽

龚萍 Gong Ping

Keyword(s):

Wavelength Division Multiplexing ◽

Time Domain ◽

Optical Network ◽

Network Monitoring ◽

Time Domain Reflectometry ◽

Passive Optical Network ◽

Wavelength Division ◽

Optical Time Domain Reflectometry ◽

Optical Time

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Hybrid wavelength division multiplexing/time domain multiplexed (WDM/TDM) using radio over fiber technique with 16QAM at 2.5 Gbps

International Journal of the Physical Sciences ◽

10.5897/ijps12.658 ◽

2013 ◽

Vol 8 (18) ◽

pp. 897-900

Author(s):

O Aldhaibani A ◽

A Aljunid S ◽

A Fadhil Hilal ◽

S Anuar M

Keyword(s):

Wavelength Division Multiplexing ◽

Time Domain ◽

Radio Over Fiber ◽

Wavelength Division

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Impact of a Post-OTDM-Demux Optical Filter

Optical Transmission and Networks for Next Generation Internet Traffic Highways ◽

10.4018/978-1-4666-6575-0.ch014 ◽

2015 ◽

pp. 310-325

Keyword(s):

Wavelength Division Multiplexing ◽

Pulse Width ◽

Optical Filter ◽

Signal Pulse ◽

Spectral Densities ◽

Wavelength Division ◽

Optical Time Division Multiplexing ◽

Optical Time ◽

Time Division ◽

The Impact

The impact of a post-OTDM-demultiplexing optical filter on the performance of dense On-Off Keying (OOK) Optical Time Division Multiplexing (OTDM)-Wavelength Division Multiplexing (WDM) systems is studied in this chapter. For Return-to-Zero (RZ) modulation, it was found that the additional filter working in a double-tier filter configuration did not offer any significant improvements to performance when the signal pulse width is optimized. Improvements generally increase only when the signal pulse width deviates from its optimal value and only for low spectral densities. For ideal Non-Return-to-Zero (NRZ) modulation, however, significant improvements of around 1 dB are obtained using the double-tier configuration over a large range of spectral densities.

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UltraHigh Bit-Rate Hybrid DWDM Optical System Design Using DP-QPSK Modulation

Journal of Optical Communications ◽

10.1515/joc-2018-0199 ◽

2018 ◽

Vol 0 (0) ◽

Author(s):

Subhrajit Pradhan ◽

Bijayananda Patnaik ◽

Rashmita Kumari Panigrahy

Keyword(s):

Wavelength Division Multiplexing ◽

Long Distance ◽

Eye Diagram ◽

Wavelength Division ◽

Space Optics ◽

Optical Time Domain Reflectometer ◽

Link Distance ◽

Last Mile ◽

Shift Keying ◽

Optical Time

AbstractIn this work, an optical hybrid communication system is proposed. It is a combination of diffused link (DL) configuration of free space optics (FSO) setup and fiber optic setup. It is a 16-channel dense wavelength division multiplexing (DWDM) system, with 400 Gbps/channel data rate. It uses dual polarization-quadrature phase shift keying (DP-QPSK) modulation technique for all the setups. Bit error rate (BER), eye diagram, quality actor (Q-factor), optical time domain reflectometer (OTDR), optical spectrum analyzer (OSA) signals are considered as performance parameters of the proposed system. It is found that the link distance is 340 m for DL setup and 1,000 km for fiber setup. The system will be very much useful for solving first mile, last mile problem with long distance optical communication applications in 5 G era.

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A technique to improve optical time division multiplexing - wavelength division multiplexing performance

IEICE Electronics Express ◽

10.1587/elex.2.589 ◽

2005 ◽

Vol 2 (24) ◽

pp. 589-594 ◽

Cited By ~ 1

Author(s):

C. C. Hiew ◽

F. M. Abbou ◽

T. H. Chuah ◽

Hairul A. Abdul-Rashid

Keyword(s):

Wavelength Division Multiplexing ◽

Time Division Multiplexing ◽

Wavelength Division ◽

Optical Time Division Multiplexing ◽

Optical Time ◽

Time Division

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Optimization of Parameters for Optimal Performance

Optical Transmission and Networks for Next Generation Internet Traffic Highways ◽

10.4018/978-1-4666-6575-0.ch011 ◽

2015 ◽

pp. 272-284

Keyword(s):

Spectral Density ◽

Wavelength Division Multiplexing ◽

Duty Cycle ◽

Optical Filter ◽

Spectral Width ◽

Optical Signal ◽

Signal Pulse ◽

Filter Bandwidth ◽

Wavelength Division ◽

Optical Time

The impact of the signal pulse width and the optical filter bandwidth on the performance of both RZ and NRZ On-Off Keying (OOK) Optical Time Division Multiplexing (OTDM)-Wavelength Division Multiplexing (WDM) systems are studied in this chapter. Using polynomial fitting, an approximated expression for the optimal signal pulse duty cycle as a function of the spectral density SD and Optical Signal to Noise Ratio (OSNR) is provided. Further, it is found that the bit rate per WDM channel does not affect the optimum signal pulse duty cycle. As the spectral density SD increases, DCopt increases, reducing the signal spectral width to compensate for the reduced the WDM channel frequency spacing ?f. For increasing OSNR, DCopt increases slightly, especially at higher SD. The authors found that ideal NRZ performs better than optimized RZ at high SD but worse at low SD.

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