G.652 fiber vs G.654 fiber, What is difference? How to Choose?

What is G.652 fiber ? G.652 is an optical fiber designed to carry single-mode light. The first version of G.652 fiber optic cable was standardized in 1984, and there are now four sub-categories of the standard: G.652.A, G.652.B, G.652.C, and G.652.D. All four variants have the same G.652 core size, which is 8-10 microns. G.652 has a zero dispersion wavelength of 1310nm, which makes it well suited for long-distance and high-capacity communication networks.

Types of G.652 Fiber

Specification	G.652.A	G.652.B	G.652.C	G652.D
Wavelength Range	1310nm-1550nm	1310nm-1625nm	1310nm-1625nm	1310nm-1625nm
Maximum Attenuation Coefficient	1310nm:0.5dB/km 1550nm:0.4dB/km	1310nm:0.4dB/km 1550nm:0.35dB/km 1625nm:0.4dB/km	1310nm to 1625nm:0.4dB/km 1550nm:0.3dB/km	1310nm to 1625nm:0.4dB/km 1530-1565nm:0.3dB/km
PMD	Less than 0.5ps/sqrt	Less than 0.2 ps/sqrt(km)	Less than 0.5ps /sqrt(km)	Less than 0.2ps /sqrt(km)
Nominal MFD min	8.6um	8.6um	8.6um	8.6um
Nominal MFD max	8.6um	8.6um	8.6um	8.6um

Market Trend of G652 Fiber

With the improvement of fiber manufacturing technology, G.652A and G.652C have been eliminated by the market, as they cannot meet the increasingly high transmission requirements. The current mainstream in the market are G.652B and G.652D. However, the sales volume of G.652D is much higher than that of G.652B, even though their prices are similar.

What is G.654 Fiber ?

G.654 fiber is one of the G series fiber standards defined by ITU-T, and is mainly used for transmission in long-distance submarine and terrestrial fiber networks. This fiber has the characteristics of low loss, low dispersion and high reliability, and plays an important role in long-distance optical communication transmission and optical network construction. G.654E is the most common one in the G series.

G.652 fiber vs G.654 fiber, How to Choose?

There are significant differences in application scenarios between G652 and G654.

Application scenarios of G652 fiber

G652 fiber has lower transmission loss. Especially in the two commonly used wavelength windows of 1310nm and 1550nm, the attenuation is small. Therefore, it is very suitable for the transmission of long-distance trunk networks. In addition to long-distance communications, G652 optical fiber is also widely used in metropolitan area networks. Provide reliable support for high-speed data transmission within the city.

Application scenarios of G654 fiber

G654 optical fiber is very suitable for the long-distance and large-capacity communication needs of submarine optical cables. It is optimized to reduce losses and increase mode field diameter. G654.E optical fiber is also commonly used for land trunk transmission. Especially in WDM systems with single carrier rates exceeding 100G. The large effective area and low attenuation characteristics of G654.E fiber can effectively improve the OSNR tolerance of the system. Thereby improving transmission performance.

Summarize

G.652 optical fiber vs G.654 optical fiber, both play an important role in different applications. If you want detailed usage recommendations, please contact us.