C/S-band WDM-PON employing colorless bidirectional transceivers and SOA-based broadband light sources

Shin, Dongjae; Keh, Y. C.; Kwon, J.W.; Lee, E.H.; Lee, J.K.; Park, M.K.; Park, J.W.; Kang, Jaeyoung; Oh, Y.K.; Kim, S.W.; Yun, I.K.; Shin, Hyun Cheol; Heo, Duchang; Lee, J.S.; Shin, H.S.; Kim, H.S.; Park, S.B.; Jung, Daeseung; Hwang, Seongtaek; Oh, Youngtek; Jang, Dong-Hoon; Shim, Changbeom

doi:10.1109/ofc.2005.193214

Cited by 10 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The center wavelength kX and periodicity FSR(A) of the AWG are given by [4]: (2) m~~~~~~~~~~m ngroup where m is the grating order and fleffand ngroup are respectively the effective and group index of the waveguides. For WDM-PON applications the one grating order is used for upstream and another one for downstream data.…”

Section: Design and Fabrication Of Athermal Awgmentioning

confidence: 99%

“…Specifically for WDM-PON, the Mux/Demux filters the light from the Broadband Light source (BLS) to injection lock the wavelength of the FP laser. Thus, all TRx in the OLT and the ONT are identical, reducing the cost of the system [1,2]. The requirements for the Mux/Demux for WDM-PON and Hybrid-PON are different than for normal metro applications.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Athermal AWGs for colourless WDM-PON with -40&#176;C to +70&#176;C and underwater operation

Leick¹,

Boulanger²,

Nielsen³

et al. 2006

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference

View full text Add to dashboard Cite

show abstract

Section: Design and Fabrication Of Athermal Awgmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Athermal AWGs for colourless WDM-PON with -40&#176;C to +70&#176;C and underwater operation

Leick¹,

Boulanger²,

Nielsen³

et al. 2006

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference

View full text Add to dashboard Cite

show abstract

“…There are mainly two approaches [4]. The first one is the remodulation method of the downlink signal at each ONU such as using saturated semiconductor optical amplifier (SOA) [5] [6], injection-locked Fabry-Perot laser diode (F-P LD) [7], mutually injected F-P LD [8]. The second approach is the controlling of the wavelength source in the CO rather than in the ONUs by using additional devices in CO or each ONU for the up-link wavelength source such as employing spectrum sliced light-emitting diode (LED) [9], spectrum sliced LED with cyclic AWG [10], spectrum-sliced amplified spontaneous emission(ASE) of erbium-doped fiber amplifier(EDFA) [11], ASE injection locked F-P LD [12], and the wavelength-seeded reflective SOA(RSOA) [13].…”

Section: Introductionmentioning

confidence: 99%

An efficient optimization scheme for WDM/TDM PON network planning

Jaumard

Chowdhury

2013

Computer Communications

View full text Add to dashboard Cite

With the growing popularity of bandwidth demanding services such as HDTV, VoD, and video conferencing applications, there is an increasing demand on broadband access. To meet this demand, the access networks are evolving from the traditional DSL (xDSL more recently) and cable techniques to a new generation of fiber-based access techniques. While EPONs and GPONs have been the most studied passive optical access networks (PONs), WDM-PON is now clearly seen as the next generation trend with an hybrid set of switching equipment.We propose here an original optimization scheme for the deployment of greenfield PON networks where we minimize the overall deployment cost. Given the geographical location of ONUs and their incoming/outgoing traffic demands, the newly proposed scheme optimizes the placement of splitters/AWGs in a PON and the link dimensioning in order to provision the overall demand.The optimization scheme proceeds in three phases. In the first phase, we generate several potential equipment hierarchies, where each equipment hierarchy is associated with an ONU partition such that a switching equipment is associated with each cluster, each ONU belongs to a single cluster, and the splitting ratio of the equipment corresponds to the number of ONUs in the cluster. In the second phase, for each equipment hierarchy, we make use of a column generation (CG) mathematical model to select the type and location of the switching equipment that leads to the minimum cost multi-stage equipment topology which accommodates all the traffic demand. The third phase selects the best hierarchy among all the generated and dimensioned Preprint submitted to Computer ComunicationsOctober 2, 2012hierarchies.The optimization model encompasses the particular cases where all switching equipment are either splitters and AWGs, and outputs the location of the switching equipment together with the dimensioning of the PON network. We performed numerical experiments on various data sets in order to evaluate the performance of the optimization model, and to analyze the type of equipment hierarchies which are generated depending on the traffic and the location of the ONUs.

show abstract

“…Using the periodic property of AWGs, 35 signals at 155Mbit/s can be transmitted bidirectional. Optimised FP-LDs injection-locked by ASE light are investigated in [34]. This scheme works well within a 60°C temperature range without wavelength detuning effects over 10km at data rates up to 622Mbit/s.…”

Section: Spectrum Slicing Light Sourcesmentioning

confidence: 99%

“…By incorporating 1:8 power splitters behind the AWG at the remote node, the number of maximum subscribers is boost to 128. To mitigate intensity noise effects, SOA-based broadband light sources are proposed in [35]. Colourless operation over 25km fibre for up-and downstream signals is demonstrated at 155Mbit/s within the temperature range -20°C to 80°C using uncooled FP-LD.…”

Section: Spectrum Slicing Light Sourcesmentioning

confidence: 99%

Investigation of reflective optical network units for bidirectional passive optical access networks

Arellano Pinilla

View full text Add to dashboard Cite

Esta investigación está conducida a la resolución del problema de encontrar soluciones rentables para el despliegue de redes de fibra hasta el hogar (Fibre to the Home - FTTH). En una red de FTTH, el equipo transmisor-receptor de usuario así como el despliegue de la fibra en la llamada 'última milla' son las barreras principales. Una topología que consiste en hacer llegar una única fibra para dirigirse a cada usuario reduce la cantidad de fibra requerida. Por otro lado, los componentes ópticos pasivos alivian los requisitos de mantenimiento de la red de acceso. El efecto del backscattering de Rayleigh se ha identificado como la interferencia más crítica de este tipo de transmisión, el efecto sobre el funcionamiento del sistema y las investigaciones de posibles soluciones al mencionado problema son centro de estudio de esta tesis. Los experimentos realizados, revelan que, a pesar de la interferencia causada por del effecto Rayleigh no se puede eliminar totalmente, hay diferentes técnicas capaces de atenuar dicho efecto. El uso de los amplificadores ópticos semiconductores para implementar las funciones de transmisión-recepción agrega simplicidad al diseño de red en términos de transparencia de la longitud de onda y gracias a las capacidades de la amplificación de esta familia de dispositivos. Los resultados experimentales presentaron en este trabajo demuestran con éxito la modulación y la detección a 1Gbit/s y 2.5Gbit/s con los dispositivos basados en semiconductores, en enlaces de hasta 30km e incluso de hasta 50km de longitud. Nuevos prototipos son potencialmente capaces de transmitir a 10Gbit/s. Estructuras reflectoras basadas en amplificadores ópticos semiconductores reflectores son los candidatos mas adecuados. Éstos, realizan funciones de transmisión eficientemente y proporcionan la amplificación adecuada. Sin embargo, es necesario el diseño de nuevos diseños capaces de transmitir datos a una velocidad mayor. Una estrategia de comunicación bidireccional mediante una única fibra es la arquitectura más interesante los términos de reducción de costes por usuario (CAPEX). Por estos motivos, la ONU se convierte en un elemento clave en redes de acceso y un área muy interesante de investigación. Para una evolución exitosa de FTTH el diseño de la unidad de red debe ser simple, robusto, flexible y bajo coste para el cliente final. La traducción de los requisitos anteriormente mencionados en especificaciones técnicas establece las pautas siguientes para el diseño del FTTH ONU - Una única fibra por cada usuario para reducir tamaño de la red de acceso - Independencia de la longitud de onda para permitir una operación transparente en redes WDM - Que no haya fuente de luz activa en las dependencias de usuario para prevenir el mantenimiento en el lado del usuario - Con amplificación y así poder aumentar el número de usuarios y alcanzar mayores distancias De esta manera, el objetivo principal de esta tesis es la investigación de unidades ópticas de red reflectoras, especialmente las basadas en amplificadores ópticos de semiconductor, así como su funcionamiento en redes de FTTH, basadas en tecnología de acceso WDM-PON. Esto implica fundamentalmente - Identificar arquitecturas y dispositivos propuestos por medio de la investigación del trabajo publicado relacionado y destacar limitaciones y requisitos de los sistemas actuales - evaluar las diversos alternativas para la ONU y para proponer soluciones mejoradas, demostradas con simulaciones y experimentos - investigar limitaciones posibles de los sistemas transmisión bidireccionales y desarrollar soluciones para la mejora de la transmisión - desarrollar descripciones analíticas de las señales implicadas en la transmisión This research was conducted to deal with the problem of finding cost-effective solutions for Fibre-to-the-Home (FTTH) network deployment. In the FTTH network, the transceiver at the user premises and the deployment of fibre at the last mile are the major barriers. A single-fibre topology to address each user reduces the amount of fibre required; passive optical components alleviate maintenance requirements in the access network. The Rayleigh backscattering effect is identified as the most critical crosstalk in such transmission, the effect on the system performance and the investigations of possible solutions are presented in this thesis. The studies reveal that despite the Rayleigh backscattering crosstalk can not be totally eliminated, several techniques can mitigate the effect. The use of the semiconductor optical amplifiers to feature transceiver tasks at the user premises adds simplicity to the network design in terms of wavelength transparency and amplification capabilities. We propose implementations with semiconductor amplifiers and test modulation and detection potentials inside the optical network. The experimental results successfully demonstrate modulation and detection at 1Gbit/s and 2.5Gbit/s with semiconductor-based devices, in links of 30km and even though of 50km length; bit rate of 10Gbit/s is feasible with novel prototypes as well. Reflective structures based on reflective semiconductor optical amplifiers are potential candidates, as they perform transmission functions efficiently and provide adequate amplification however, it is necessary the design of further structures capable of transmitting at a higher bit rates.

show abstract

C/S-band WDM-PON employing colorless bidirectional transceivers and SOA-based broadband light sources

Cited by 10 publications

References 1 publication

Athermal AWGs for colourless WDM-PON with -40&#176;C to +70&#176;C and underwater operation

Athermal AWGs for colourless WDM-PON with -40&#176;C to +70&#176;C and underwater operation

An efficient optimization scheme for WDM/TDM PON network planning

Investigation of reflective optical network units for bidirectional passive optical access networks

Contact Info

Product

Resources

About

C/S-band WDM-PON employing colorless bidirectional transceivers and SOA-based broadband light sources

Cited by 10 publications

References 1 publication

Athermal AWGs for colourless WDM-PON with -40&amp;#176;C to +70&amp;#176;C and underwater operation

Athermal AWGs for colourless WDM-PON with -40&amp;#176;C to +70&amp;#176;C and underwater operation

An efficient optimization scheme for WDM/TDM PON network planning

Investigation of reflective optical network units for bidirectional passive optical access networks

Contact Info

Product

Resources

About

Athermal AWGs for colourless WDM-PON with -40°C to +70°C and underwater operation

Athermal AWGs for colourless WDM-PON with -40°C to +70°C and underwater operation