Utilizing same WDM wavelengths for delivering both baseband and FSO signals in ring-type access network

In this research, a ring-based wavelength-division-multiplexing passive optical network (WDM-PON) architecture is proposed to support the baseband and free space optical (FSO) communication simultaneously, when the same WDM downstream wavelengths are applied in the optical line termination (OLT). Th...

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Bibliographic Details
Published in:Optical and quantum electronics 2023-06, Vol.55 (6), Article 494
Main Authors: Chen, Li-Ci, Lai, Yi-Ting, Liu, Li-Hung, Yeh, Chien-Hung, Lin, Wen-Piao, Chow, Chi-Wai
Format: Article
Language:English
Subjects:
Bit error rate
Characterization and Evaluation of Materials
Computer architecture
Computer Communication Networks
Computer networks
Electrical Engineering
Error correction
Free-space optical communication
Insertion loss
Lasers
On-Off Keying
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Upstream
Wavelength division multiplexing
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Summary:In this research, a ring-based wavelength-division-multiplexing passive optical network (WDM-PON) architecture is proposed to support the baseband and free space optical (FSO) communication simultaneously, when the same WDM downstream wavelengths are applied in the optical line termination (OLT). The optical modules of the OLT and remote node (RN) are designed to apply in the ring network architecture for bidirectional data access. Here, all the WDM wavelengths are divided into the downstream and upstream bands to avoid the Rayleigh backscattering (RB) noise through 51 km fiber connection. The 10 Gb/s on-off keying (OOK) bit error rate (BER) performances of downstream and upstream signals are also performed and analyzed. Moreover, all the measured baseband and FSO sensitivities of downstream and upstream signals can achieve enough power budgets to comply with the total insertion loss of proposed PON system under the forward error correction (FEC) target.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-023-04690-3