Bidirectional WDM passive optical network for simultaneous transmission of data and digital broadcast video service

Son, E.S.; Han, Kwan Hee; Kim, J.K.; Chung, Yun Chur

doi:10.1109/jlt.2003.815496

Cited by 58 publications

(17 citation statements)

References 18 publications

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“…However, there have been some efforts to solve this problem. The delivery of broadcast video signals by using the cyclic property of the AWG was demonstrated [21]. The downstream data were transmitted with multi-channel DFB LDs at the 1550 nm band, while the upstream data were transmitted with light emitting diodes (LEDs) at the 1310 nm band.…”

Section: Recent Research and Developmentmentioning

confidence: 99%

WDM-PON Based on Wavelength Locked Fabry-Perot LDs

Lee¹,

Mun²

2008

Journal of the Optical Society of Korea

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A WDM-PON has been considered as an ultimate solution for access networks. However, there were many technical and practical issues for commercial deployment. These issues were solved with wavelength locked F-P LD and the WDM-PONs employing this optical source were commercialized. These WDM-PON systems have been deployed in Korea, Europe, and US. We reviewed wavelength locking technology and WDM-PON achievements. When we inject spectrum sliced broadband light into an F-P LD, the multimode output is changed to a quasi single mode. Then, we can use the single mode light for WDM signal transmission. The broad spectral gain of the semiconductor gain medium enables a color-free operation of WDM-PON, i.e., an identical ONT can be used for each user. The wavelength locking properties depend on many parameters, especially alignment of injection wavelength to a lasing mode, passband profile of AWG and front facet reflectivity of F-P LD. However, these dependencies can be reduced by proper design of the laser and the injection bandwidth. Thus, WDM-PON systems have been achieved with color-free operation.

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Section: Recent Research and Developmentmentioning

confidence: 99%

WDM-PON Based on Wavelength Locked Fabry-Perot LDs

Lee¹,

Mun²

2008

Journal of the Optical Society of Korea

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“…In passive optical networks (PON), there are two preferred methods for video transmission. The first one is the shared transportation within the digital data bit stream and the second one is the transmission over a separate wavelength which is called video overlay [Son03,Zheng03]. The worldwide first development of super high definition (SHD) image technology with 4 times higher resolution than HDTV with 4k x 2k = 8 Mega pixels per frame could be shown [Aoyama04].…”

Section: Problems In Access Networkmentioning

confidence: 99%

Design and cost performance of WDM PONs for multi-wavelength users

Schussmann

Schirl

2007

2007 Second International Conference on Access Networks &Amp; Workshops

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“…Therefore, providing both point-to-point and broadcast/multicast services is highly desirable for viable access networks. Several approaches have been studied to deliver both unicast and broadcast/multicast data simultaneously [1][2][3]. In [1], an additional light source was added to the WDM-PON architecture to deliver the broadcast service by working with a cyclic arrayed waveguide grating and a power splitter.…”

Section: Introductionmentioning

confidence: 99%