Optical layer shared protection using an IP-based optical control network

Lévy, David; Sarathy, J.; Kwon, Younghye; Al-Salameh, D. Y.

doi:10.1109/ofc.2001.927363

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…Lucent demonstrated optical share protection using an IP-base data control network (DCN) [11]. A four-fiber ring with five nodes was used in the demonstration.…”

Section: Opaque Optical Channel Shared Protection Ringsmentioning

confidence: 99%

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<title>Optical protection ring architectures and applications</title>

2002

SPIE Proceedings

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This paper surveys recent progress in optical protection rings with the focus on transparent optical protection rings. Generic requirements and attributes for optical protection rings, different optical protection ring architectures such as dedicated and shared protection rings in both the optical channel layer and the optical multiplex section layer are described. In particular, optical channel shared protection rings are discussed in detail including node architecture designs, ring protocols, triggers and messaging channels. Feasibility studies and experimental results from Corning Incorporated and other companies are reviewed. The paper also discusses how protection switching times scale with number of nodes and number of wavelengths, and shows examples of applications using the scaling rules for practical optical networks such as metro, regional and long haul ring network. Finally, the paper discusses remaining issues and future developments in the optical protection ring area.

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“…Lucent demonstrated optical share protection using an IP-base data control network (DCN) [11]. A four-fiber ring with five nodes was used in the demonstration.…”

Section: Opaque Optical Channel Shared Protection Ringsmentioning

confidence: 99%

“…It offers excellent resilience to failures and potentially a very short switching time (<50 ms) that is similar to SONET self-healing rings. Several experimental demonstrations on optical protection rings including dedicated protection rings and shared protection rings have been reported recently [4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

<title>Optical protection ring architectures and applications</title>

2002

SPIE Proceedings

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“…The result of this ability to control the SOP at the receiver allows polarization modulation to be used as an information carrier that is in addition to conventional detection schemes. Such a transmission approach can possibly be used as a low data rate protection trigger between optical network protection elements [6], or a provisioning method between end terminals and remote network elements. Compatible with this approach are the numerous polarization modulation techniques that have been demonstrated in materials such as GaAs and lithium niobate and have been shown to be relatively simple to implement [7,8].…”

Section: Introductionmentioning

confidence: 99%

Novel tone-like polarization modulation-based encoding method experimental demonstrated on a 10 G data channel over 130 Km

Pathak

Lévy

2006

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

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We present a novel encoding method and feasibility demonstration using tone-like polarization modulation onto an independently modulated optical signal for supervisory signaling within optical networks. We demonstrate experimentally error free performance for 10Gbps NRZ and 155Mbs polarization modulated signal. IntroductionIn long-haul systems, polarization effects within a network are usually minimized by the type and the length of a given fiber type, specific polarization-related component specifications (e.g. polarization dependent gain and loss), and the use of polarization dispersion compensators. Regardless of this, however, the state of polarization (SOP) of optical signals traveling in a fiber is still known to change because of fluctuations in fiber temperature, stress, or strain. However, such events are more likely to occur in terrestrial networks where mechanical disturbances due to the external influences (i.e. human activity) can occur. In fact, studies of undersea fiber optic transmission links have shown that the SOP changes are slowly varying, changing on the order of minutes to hours [1,2,3]. Various polarization control techniques have been developed to monitor and correct these slow varying SOP variations [4]. The SOP of a transoceanic optical signal has actually been tracked by using a polarization tracking receiver [9] and it has been demonstrated that polarization control can be performed at a receiver [4,5,9] as long as depolarization and nonlinear polarization conversion have not occurred. The result of this ability to control the SOP at the receiver allows polarization modulation to be used as an information carrier that is in addition to conventional detection schemes. Such a transmission approach can possibly be used as a low data rate protection trigger between optical network protection elements[6], or a provisioning method between end terminals and remote network elements. Compatible with this approach are the numerous polarization modulation techniques that have been demonstrated in materials such as GaAs and lithium niobate and have been shown to be relatively simple to implement [7,8]. A method to encode a high speed optical signal with a low data rate polarization encoded tone-like modulated signal is demonstrated here. The design of the proposed polarization encoder/decoder and the bit sequencing of the underlying data stream are discussed, and the results of transmission of polarization modulation on a 10Gbps signal in a 136km transmission link is described. We show that the error-free IOG NRZ signal quality is not affected by the encoded polarization modulation and that the 155Mbps polarization modulated signal can be successfully recovered simultaneously.

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“…Several experimental demonstrations on optical protection rings including dedicated protection rings and shared protection rings have been reported recently [6][7][8]. Optical shared protection rings offer better bandwidth utilization than optical dedicated protection rings, but require a more complicated signaling and control system.…”

Section: Introductionmentioning

confidence: 99%

Transparent Two-Fiber Optical Channel Shared Protection Ring

2003

Fiber and Integrated Optics

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A two-fiber optical channel shared protection ring including node architecture, signaling protocol, control hardware, and software is designed and implemented experimentally. For a ring with four nodes and two wavelengths, a total protection switching time of 6.8 ms is demonstrated along with a revert-to-working switching time of 1.6 ms. Experimental results show that the switching time scales linearly with number of nodes and number of wavelengths. The system can protect a ring with 16 nodes, 1200 km circumference, and 40 wavelengths in less than 50 ms.

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Optical layer shared protection using an IP-based optical control network

Cited by 7 publications

References 3 publications

<title>Optical protection ring architectures and applications</title>

<title>Optical protection ring architectures and applications</title>

Novel tone-like polarization modulation-based encoding method experimental demonstrated on a 10 G data channel over 130 Km

Transparent Two-Fiber Optical Channel Shared Protection Ring

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