Operation, administration and maintenance systems of the optical fiber loop

Uneoya, T.; Ashiya, F.; Tomita, Nobuo; Satoh, Koichi; Sakai, T.

doi:10.1109/glocom.1990.116740

Cited by 4 publications

(4 citation statements)

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“…1. This system consists of an optical branch module, a fiber selector, a dichroic reflective optical filter, a 1.55-pm-band OTDR, a database and a personal computer (CPU) [5]. The optical branch module is composed of optical couplers, filters and an accommodation box, and has the capacity for a test light to be introduced into an in-service optical fiber line through the coupler.…”

Section: A System Configurationmentioning

confidence: 99%

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A new fault-identification method using a dichroic reflective optical filter in optical subscriber loops

Takasugi¹,

Tomita²,

Suzuki³

et al. 1993

J. Lightwave Technol.

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A new method is studied which can automatically identify faults between an optical line and the transmission equipment on the subscriber side. This method employs a 13/1.55-pm-WDM dichroic reflective optical filter and a 1.55-pm-band OTDR. The filter is inserted between the optical line and the transmission equipment. The level and distance of reflection from the filter are measured with a 1.55-pm-band OTDR from the central office in this fault identification method. The required characteristics and structural design method for the filter are discussed. A prototype of the filter is fabricated and which achieves the target characteristics and reliability. System evaluation experiments are carried out and the possibility of 100% fault identification is confirmed as a result of accuracy tests in the field.

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Section: A System Configurationmentioning

confidence: 99%

“…shows results for the relationship between L,t, L,, and 8 calculated and measured with(5) and(6), where D = 0 or 30 pm and t = 10 pm. As is clear from the diagram, the calculated results and those measured with the prototype DRO filter are in good agreement.…”

mentioning

confidence: 97%

A new fault-identification method using a dichroic reflective optical filter in optical subscriber loops

Takasugi¹,

Tomita²,

Suzuki³

et al. 1993

J. Lightwave Technol.

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“…On the basis of the interfaces to other operation systems [8], the OA&M systems of the physical network should be composed of three layers as shown in Fig. 1.…”

Section: Basic Concept Of Integrated Oaandm Systemsmentioning

confidence: 99%

“…The facilities layer contains various facilities, such as cables, closures and other outside plants. For (b) ans (c), we have developed new water-blocking optical fiber cables and water sensors which employ water absorbent materials [1] and a fiber line testing system [8] which can automatically perform various line tests, such as optical time domain reflectometer (OTDR) tests, cable and splicing loss tests, and fiber identification, through remote control from work stations. Such a concept can classify the functions and compositions of the OA&M systems in the physical networks, which means that the applications can easily be designed.…”

Section: Basic Concept Of Integrated Oaandm Systemsmentioning

confidence: 99%

Optical Fiber Switching System in Optical Cable Network Operation

Uenoya¹,

Shimizu²,

Kobayashi³

1997

Journal of Optical Communications

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This paper describes the basic concept of a future optical cable network operation system for optical subscriber loops. The problem of existing subscriber networks and the functions required of the integrated operation systems are clarified. In addition, for the optical fiber switching system in the integrated operation system, the system configuration and experimental studies are presented on switching functions. As the results, good performance has been confirmed for the development system.

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