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ケーブリング・クロニクル

2018-2-14

It’s always interesting at trade shows to learn what’s on the minds of end users, designers and technicians alike when it comes to testing.And this year’s BICSI Winter Conference was no different.

2018-2-07

We’ve covered fiber insertion loss in plenty of past blogs, so by now we hope that you know it’s the amount of signal loss that occurs as the signal travels along a cable link.We also hope you know that insertion loss is directly related to the length of the cable—the longer the cable, the greater the loss—and that any connection point along the way (connectors, splices, splitters, etc.) also adds to the loss. 

2018-1-31

High speed applications are driving the deployment of multifiber MPO/MTP architectures in the data center, and it’s not just cloud and hyperscale data centers that are deploying these solutions.As the de facto interface for 40 Gig and 100 Gig switch-to-switch backbone data center applications that use parallel optics, MPO/MTP links are rapidly becoming commonplace in today’s enterprise data centers.

2018-1-24

A passive optical LAN, also sometimes referred to as simply a passive optical network (PON), is a point-to-multipoint architecture that used passive optical splitters to split optical transmission signals from a single strand of singlemode fiber into multiple outputs.The technology has gained wide acceptance in outside plant applications, and it is now gaining traction in premise applications—especially in government and hospitality markets.

2018-1-17

NBASE-T Alliance によって推進された、NBASE-T 仕様に適合する IEEE 802.3bz は、カテゴリ 5e ケーブル 100 メートル以上で2.5Gbps、カテゴリ 6 ケーブル100メートル以上で 5 Gbps を指定しています。また、特定の使用事例(拡張周波数)において、カテゴリ 5e での 5 Gbps のサポートも規定しています。

2018-1-10

光ファイバー・ケーブルでデータを正常に送信するには、ケーブルの一端のリンクの送信信号(Tx)がもう一端の受信側(Rx)と一致する必要があります。信号の伝達方向を定義する極性の役割は、この通信を維持することにあります。特に並列光アプリケーションで使用される MPO ソリューションにおいて、光ファイバーの極性は業界で多くの混乱を引き起こしています。

2018-1-03

この時期はどの業界も過去12ヶ月間を振り返り、2018年がどんな年になるかを予測するものです。それは今年も変わりません。

2017-12-27

In the spirit of the season and that “Sound of Music” favorite by Julie Andrews (that some have dubbed a holiday classic), we thought we’d take a moment to wish everyone Happy Holidays and Best Wishes for a Prosperous New Year and share with you a recap of some of this years’ favorite Cabling Chronicles (yes, it is sung to the tune of “My Favorite Things.”)

2017-12-20

There’s no doubt that the European Union has a lot of rules and regulations—something frequently pointed out by those who campaigned for a Brexit vote in the United Kingdom.And many joke about some of the more ridiculous ones, like the law that prohibits people from eating pet horses, or the one that prohibits manufacturers of bottled water from labels suggesting that consumption could fight dehydration.(Since when didn’t water fight dehydration?)

2017-12-13

A fusion splice is when two fibers are fused together using an electric arc.Often used with pigtails for connecting 250-micron outside plant fiber to 900-micron inside plant fiber at the building entrance, fusion splicing is achieved with a fusion splicing machine after the fiber is properly cleaved with a precision cleaver.Fusion splicing can be done for a single fiber or for 12-fiber ribbon cable via mass fusion splicing that splices all 12 fibers at once.

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