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Introduction to eCPRI
2020-05-16  |  FirstFiber.cn

eCPRI is short for enhanced Common Public Radio Interface, it is published after CPRI. eCPRI standard defines specification which connects eREC and eRE via fronthaul transport network. It is an important technology for understanding 5G systems, LTE-Advanced and LTE-Advanced Pro.

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FirstFiber Launches its new OPM Optical Power Meter
2020-05-12  |  FirstFiber.cn

FF-1015 Mini Optical Power Meter has compact structure and stable performance. It ensures high measuring precision of 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm and 1625nm wavelengths. Combined usage with Optical Laser Source, it could accurately measure the loss of fifiber, cable and other passive optical devices.

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Comparison between EPON & GPON
2020-04-27  |  FirstFiber.cn
Detailed introduction of PLC Splitter
2020-04-27  |  FirstFiber.cn

PLC splitter, short for Planar Waveguide Circuit splitter, is used to divide one or two light beams to multiple light beams uniformly or combine multiple light beams to one or two light beams. It is a passive optical device, applied to PON (EPON and GPON in FTTH application) to connect OLT in cerntral office and ONT at the premise.

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Do you know how many fiber types?
2020-03-21

There are many fiber types, but two main fiber types: single mode fibers (SM) and Multi-mode fibers (MM).

For G.657 fibers, there are four sub-types: G.657A1, G.657A2, G.657B2 and G.657B3.
“1”, “2” and “3” mean the minimum bending radius.
The mininum bending radius of G.657 fibers as follows:

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How to manufacture optical fiber?
2020-03-21

Both the core and the cladding of an optical fiber are made of highly purified silica glass. An optical fiber is manufactured from silicon dioxide by either of two methods. The first, the crucible method, in which powdered silica is melted, produces fatter, multimode fibers suitable for short-distance transmission of many light wave signals. The second, the vapor deposition process, creates a solid cylinder of core and cladding material that is then heated and drawn into a thinner, single-mode fiber for long-distance communication.

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Do you know this optical fiber cable code from NEC 2020
2019-11-24

In the latest National Electrical Code 2020, there are Optical fiber cables with the following classification: OFNP, OFCP, OFNR, OFCR, OFNG, OFCG, OFN, and OFC. The following article briefly introduces these cable codes:

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