100G & 400G

What is QSFP-DD Modules

Backwards compatibility is the primary appeal of the QSFP-DD form factor. The QSFP form factor is today’s industry workhorse for delivering 40 and 100GbE. The “Q” is for “quad” — a nod to the four-channel electrical interface, with each lane running at 25 Gbps for 100GbE. QSFP-DD adapts the same basic concept as its predecessor, […]

Fiber Splicing

Difference among Fujikura FSM-70+, Sumitomo TYPE-72C, Fitel S179A and INNO View 7 Fusion Splicer

The following is a comparison table among Fujikura FSM-70S+/FSM-80S+, Sumitomo Type-72C, Fitel S179A and INNO View 7 Fusion Splicers. Manufacturer FUJIKURA SUMITOMO FITEL INNO Model No. FSM-70S+ TYPE-72C S179A View 7 Splicing Method Core Alignment Core Alignment Core Alignment Core Alignment Applicable Fibers SM(G. 652/657) MM(G.651) DS(G. 653) NZDS(G. 655) SM(G. 652/657) MM(G.651) DS(G. 653) […]

Optical Fiber TOPICS

Differences among Multimode (OM1, OM2, OM3, OM4, OM5) and Single Mode (OS1, OS2) Fiber

What are OM and OS type fiber optic cables? In ANSI/TIA-568.3-D, the TIA adopted the nomenclature for fiber found in the international standard ISO/IEC 11801. The multimode fiber is prefixed with “OM” and the singlemode mode “OS”. The new designation in ANSI/TIA-568.3-D should alleviate some of the confusion associated with application support distance issues. Each […]

Copper Cabling TOPICS

Network classifications and categories

  Classes Link / channel Cable / connectors Ethernet Speed Shielded / unshielded connector type Distance Class A 100 kHz Category 1 Class B 1 MHz Category 2 Class C 16 MHz Category 3 telephony & 10 mbps UTP RJ11/12/45 N.A. 25 MHz Category 5 10/100 mbps UTP/FTP RJ45 (2 pairs) 100m (90+10) Class D […]

Optical Cable TOPICS

Blowing Method for Air Blown Fiber

Cable installation by using high-speed air ow combined with additional mechanical pushing force is called as “blowing or jetting”. Cable blowing is the process of installation of optical ber cable into a pre-installed duct. Compressed air is injected into the duct inlet after few hundred meters of cable is pushed into the duct. Compressed air […]

Data Center TOPICS

Polaritetens betydelse för MPO/MTP

MPO/MTP är en flexibel, hållbar samt skalbar teknisk lösning med hög densitet, och är samtidigt en av de mest relevanta teknikerna för att migrera system över till 40 & 100G Ethernet. En av stötestenarna som en nätverksdesigner behöver tänka på, är hur man försäkrar sig i att rätt polaritet på sändande/mottagande fibrer uppnås från start […]

100G & 400G Data Center TOPICS

De ontwikkeling van nieuwe IEEE 802.3 Ethernet-standaarden

25GBASE-SR Door de ontwikkeling van 100GBASE-SR4 in 2015 werd het noodzakelijk een nieuwe standaard te ontwikkelen voor een lagere snelheid in de vorm van 25GBASE-SR. Deze is in 2016 formeel vastgelegd als IEEE 802.3by Ontwikkeld voor het aggregeren van vier 25G server-poorten naar één 100G switch-poort De transceiver gebruikt de bekende SFP+ form factor met […]

100G & 400G Data Center TOPICS

Testing and structured cabling standards: Harmonization?

By SEYMOUR GOLDSTEIN, Fluke Networks — If you ever attended a Standards meeting you might have heard the word “harmonization” mentioned frequently. The idea of harmonization, somewhat of a holy grail, is to have standards from different organizations agree. For example, imagine if the TIA, IEC, and ISO/IEC organizations used the same test standard. Actually, […]

100G & 400G Data Center

CS Connector – The Next Generation of Data Centre Connectivity by Senko

Senko’s new CS connector is specifically designed for Data Centre 400G optimization. Intended to complement the form factor of the next generation of (OSFP/ QSFP-DD) transceiver modules, the CS connector meets the requirement for 2x100G/200G CWDM4 transceivers requiring two pairs of TX/RX. Customer benefits include: 36 % reduction in size. Pitch is reduced to 3.8mm […]

FTTH Network

FTTH project characteristics

To successfully built and implement modern FTTH network you need to realize how big work must be done and especially define basic parameters of such system. Design aspects: At this stage you need to elaborate a conception and project which will be developed at the next stages. System must be uniformed, based on well known, […]