Dynamic wavelength selective add/drop node comprising tunable gratings

Okayama, Hideaki; Ozeki, Y.; Kunii, T.

doi:10.1049/el:19970607

Cited by 24 publications

(12 citation statements)

References 2 publications

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“…If the bi-directional optical fiber channel is applied, the total transmitted wavelengths will be reduced to N(N − 1)/4 when the N nodes are supported in the network. According to Okayama et al [6], a bi-directional reconfigurable OADM can be easily achieved. As illustrated in Fig.…”

Section: Bi-directional Oadm Based On Tunable Fiber Gratingsmentioning

confidence: 99%

“…Okayama et al [6] proposed a tunable add-drop multiplexer that uses two 4-ports OCs and a pair of multiple identical gratings for each add-drop channel using in the unidirectional network, as shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the fiber grating with a reflectivity of 95% is not acceptable in the International Telecommunication Union (ITU) standard. We therefore apply the Okayama et al [6] architecture to build a bidirectional reconfigurable optical add-drop node and adopt the practical components to investigate the performance in the proposed bi-directional OADM (BOADM).…”

Section: Introductionmentioning

confidence: 99%

“…1. Wavelength-selective add/drop node using tunable fiber gratings [6]. variable attenuators were implemented into the system for the power equalization of each wavelength signal.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fiber-grating add–drop reconfigurable multiplexer with multichannel using in bi-directional optical network

Tsai

2007

Optical Fiber Technology

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Section: Bi-directional Oadm Based On Tunable Fiber Gratingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…1. Wavelength-selective add/drop node using tunable fiber gratings [6]. variable attenuators were implemented into the system for the power equalization of each wavelength signal.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fiber-grating add–drop reconfigurable multiplexer with multichannel using in bi-directional optical network

Tsai

2007

Optical Fiber Technology

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“…Therefore, the insertion loss of OXCs largely caused by the OCs tends to be very high. MOCs, especially fourport OCs, had been proposed for optical add/drop multiplexer [17], bi-directional systems [18] and other WDM equipments. In this section, we study FBG-MOC-based reconfigureably nonblocking OXC architecture.…”

Section: Signal Inmentioning

confidence: 99%

Tunable fibre Bragg grating based optical cross connects using multi‐port optical circulators: structure and crosstalk analyses

Ghassemlooy

2001

Int J Communication

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SUMMARYTunable fibre Bragg grating (FBG)-based reconfigureably non-blocking optical cross connect (OXC) using multi-port optical circulators (MOCs) are proposed and presented. In an FBG-MOC-based OXC, system insertion loss, system differential insertion loss together with OXC dimensions have been analysed and compared with FBG-OC-based OXC structure using three-port optical circulators (OCs). Optical crosstalk in a multiwavlength FBG-OC-based OXC is discussed, and two crosstalk mechanisms, intraband and interband are identified. To compare FBG based OXC with other OXC structures, an analytical model of intraband optical crosstalk is presented. Results show that tunable FBGs based OXCs are attractive OXC schemes as crosstalk level is independent of the number of wavelength channel per fibre. For the worst case the coherent crosstalk is the dominant crosstalk, which is about 20-30 dB higher than the incoherent crosstalk, depending on the switching state of the cascaded 2 Â 2 OXCs. However, in practical applications incoherent crosstalk is usually dominant, since it is highly unlikely that all the same wavelength-channels will originate from the same optical source. And the crosstalk of FBGs is the dominant crosstalk.

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Fiber Grating Band-Pass Filters

Kashyap

2010

Fiber Bragg Gratings

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Dynamic wavelength selective add/drop node comprising tunable gratings

Cited by 24 publications

References 2 publications

Fiber-grating add–drop reconfigurable multiplexer with multichannel using in bi-directional optical network

Fiber-grating add–drop reconfigurable multiplexer with multichannel using in bi-directional optical network

Tunable fibre Bragg grating based optical cross connects using multi‐port optical circulators: structure and crosstalk analyses

Fiber Grating Band-Pass Filters

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