Novel scheme enabling broadcast signal transmission in WDM passive optical network

2011 ◽  
Vol 9 (4) ◽  
pp. 040602-40605 ◽  
Author(s):  
马雪娇 Xuejiao Ma ◽  
甘朝钦 Chaoqin Gan
Keyword(s):  
Signal Transmission ◽  
Optical Network ◽  
Passive Optical Network

A Scheme for UDWDM-PON Broadband Access Network Using a Mode Locked Laser Diode and Optical Injection Locking

2018 ◽  
Vol 39 (4) ◽  
pp. 407-412
Author(s):  
Meenakshi Chakraborty ◽  
Taraprasad Chattopadhyay
Keyword(s):  
Signal Transmission ◽  
Optical Network ◽  
Access Network ◽  
Optical Injection ◽  
Passive Optical Network ◽  
Long Distance ◽  
Optical Injection Locking ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Video Signals

Abstract This paper describes an useful scheme of ultra-dense wavelength division multiplexed-passive optical network (UDWDM-PON) meant for the bidirectional transmission of analog video signals to the users in the Optical Network Unit (ONU). Each user has a dedicated wavelength which carries a group of analog video channels. This PON scheme is bidirectional with a long distance of transmission of 100 km typically over a single optical fiber. The video channels designated for a particular user in the ONU can be continuously tuned by a post-detection tunable bandpass filter. Intermodulation distortion (IMD) resulting from a mixing of analog video channels carried by a single wavelength has been calculated for a group of three video channels which lies in the range of –30 dB to –85 dB typically for a set of values of parameters used in practice. This IMD level is fairly acceptable for analog video signal transmission and reception in practice. The novelty of this scheme is that it is long reach.

scholarly journals AN ENHANCED G-PON FAULT MONITORING TECHNIQUE USING OPTICAL SENSOR

2019 ◽  
Vol 1 (2) ◽  
pp. 39-42
Author(s):  
Auwalu Usman ◽  
Nadiatulhuda Zulkifli ◽  
Mohd Rashidi Salim ◽  
Kharina Khairi
Keyword(s):  
Signal Transmission ◽  
Optical Network ◽  
Passive Optical Network ◽  
Optical Line Terminal ◽  
Fbg Sensor ◽  
Fault Monitoring ◽  
Monitoring Technique ◽  
Optical Line ◽  
Data Signal ◽  
Optical Distribution

In this study a technique for a centralized fault monitoring and detection in Gigabit-capable Passive Optical Network (G-PON) using fiber Bragg grating (FBG) sensor is proposed. The technique detects fault once it occurs at the vulnerable locations in the fiber optic distribution link by the proposed FBG devices. Monitoring signal in the C-band is reflected by a uniform FBG with different Bragg wavelengths and reflectivities. The FBGs serve as branch identifiers in the network. The reflected signal from the FBGs is analyzed at the Optical Line Terminal (OLT) in the Central Office (CO) by an Optical Spectrum Analyzer (OSA), to identify the branch with rupture in the network. The simulated result obtained shows that the system can monitor, and detect a fault in the physical layer of the optical distribution network with negligible effects on data signal transmission.

A Centralized Gigabit Passive Optical Network Fault Monitoring Using Fiber Bragg Grating Sensor

2020 ◽  
Vol 17 (2) ◽  
pp. 1156-1162 ◽  
Author(s):  
Auwalu Usman ◽  
Nadiatulhuda Zulkifli ◽  
Mohd Rashidi Salim ◽  
Kharina Khairi
Keyword(s):  
Fiber Bragg Grating ◽  
Signal Transmission ◽  
Optical Network ◽  
Optical Power ◽  
Fiber Bragg Grating Sensor ◽  
Passive Optical Network ◽  
Bragg Grating ◽  
Erbium Doped Fiber Amplifier ◽  
Fault Monitoring ◽  
Bragg Grating Sensor

In this paper, an improved technique for a centralized fault monitoring and detection in Gigabitcapable Passive Optical Network using fiber Bragg grating sensor is proposed. The technique detects fault once it occurs at the vulnerable locations in the fiber optic distribution link by the proposed Fiber Bragg Grating devices. The scheme uses an amplified Erbium Doped Fiber Amplifier monitoring signal in the C-band and a uniform Fiber Bragg Grating with different Bragg wavelengths and reflectivities as the branch identifiers in the network. The reflected signal from the optical sensor is analyzed at the Optical Line Terminal in the Central Office by an Optical Spectrum Analyzer to determine the branch with rupture in the network. The simulated result obtained shows that the system can monitor and detect a fault in the Feeder Fiber link, up to 20 km at optical power received of −44 dBm. The scheme is capable of detecting a fault in the various optical distribution network at the remote node in the customer’s end, at minimum optical power received of −58 dBm with negligible effects on data signal transmission.

Coherent passive optical network for 5G and beyond transport

2021 ◽  
Vol 17 (9) ◽  
pp. 546-551
Author(s):  
Waseem W. Shbair ◽  
Fady I. El-Nahal
Keyword(s):  
Optical Network ◽  
Passive Optical Network

Study on P2P Service Bearer Method for Passive Optical Network for Long Distance and Wide Access

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Yan Wang ◽  
Shangya Han ◽  
Panke Qin ◽  
Yaping Li ◽  
Yanmei Shen
Keyword(s):  
Simulation Analysis ◽  
Optical Network ◽  
Passive Optical Network ◽  
Data Traffic ◽  
Core Network ◽  
Long Distance ◽  
Optical Line Terminal ◽  
Optical Line ◽  
Wide Access ◽  
P2p Service

AbstractFor the effective bearer of P2P-type services, a P2P service bearer reorientation method for passive optical network for long-distance wide access based on P2P protocol message and wire-speed message identification is proposed. However, the reorientation method still has the possibility of relocation failure, so it is modified – that is, an improved P2P service bearer reorientation method based on optical line terminal (OLT) and optical network unit (ONU) cooperation. And the tool NS2 is used for network simulation analysis. Through simulation analysis, it is verified that the modified reorientation method improves the data traffic burden at the core network and at the OLT.

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