Data Center

TARLUZ 100G QSFP28 Transceivers

The QSFP28 (Quad Small Form Pluggable) transceiver form factor was established to enable multi-lane (quad) optical transceivers, such as 100GbE and 128GFC, with a variety of optical connectors (such as 4+4 MPO and duplex LC). TARLUZ 100G QSFP28 optical transceiver including SR4, CWDM4, LR4 series, complied with IEEE 802.3bm and SFF-8636, compatible with network device […]

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 […]

NEWS

Market for Optics Returns to Growth After a Slow Start of the Year

Sales of optical components and modules dropped sharply in the first few months of 2017 because of very low demand for these products in China. The situation in China remains uncertain, but the market for optical transceivers managed to return to growth in the second quarter of 2017, as shown in the figure below. Sales […]

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, […]