INQUIRY
The ever-evolving telecommunications industry has developed a range of fiber types to meet a variety of needs and applications. These standard names are often confusing.
ITU-T (International Telecommunication Union) has defined several single-mode optical fiber standards, including G.652, G.653, G.654, G.655, G.656, G.657, etc. Among them, the commonly used standards are G.652.D, G.657.A1, G.657.A2, etc.
This article will briefly introduce the various singlemode optical fiber types and differences.
Description | IEC 60793-2-50:2018 | ITU-T Recommendation | IEC 60793-2-50:2015 | ANSI/TIA 492CAAC |
| Dispersion unshifted single- mode optical fibers | G.652 | |||
B-652.B | G.652.B | B1.1 | B-652.B | |
Dispersion unshifted single- mode optical fibers with low water peak | B-652.D | G.652.D | B1.3 | B-652.D |
Dispersion shifted single- mode optical fibers | G.653 | |||
B-653.A | G.653.A | B2_a | B-653.A | |
B-653.B | G.653.B | B2_b | B-653.B | |
Cut-off shifted single-mode optical fibers | G.654 | |||
B-654.A | G.654.A | B1.2_a | B-654.A | |
B-654.B | G.654.B | B1.2_b | B-654.B | |
B-654.C | G.654.C | B1.2_c | B-654.C | |
B-654.D | G.654.D | N/A | B-654.D | |
B-654.E | G.654.E | N/A | B-654.E | |
Non-zero dispersion shifted single-mode optical fibers | G.655 | B4 | ||
B-655.C | G.655.C | B4_c | B-655.C | |
B-655.D | G.655.D | B4_d | B-655.D | |
B-655.E | G.655.E | B4_e | B-655.E | |
Wideband non-zero dispersion shifted single- mode optical fibers | B-656 | G.656 | B5 | B-656 |
Bending loss insensitive single-mode optical fibers | G.657 | B6 | ||
B-657.A 1 | G.657.A 1 | B6_a1 | B-657.A 1 | |
B-657.A 2 | G.657.A 2 | B6_a2 | B-657.A 2 | |
B-657.B 2 | G.657.B 2 | B6_b2 | B-657.B 2 | |
B-657.B 3 | G.657.B 3 | B6_b3 | B-657.B 3 |
Fiber Type | Attenuation | Macrobending | PMD |
G.652A | ≤0.50 dB/km @1310nm ≤0.40 dB/km @1550nm
| ≤0.5 dB/km @1550nm | ≤0.5 ps/sqrt(km) |
G.652B | ≤0.40 dB/km @1310nm ≤0.35 dB/km @1550nm ≤0.40 dB/km @1625nm | ≤0.5 dB/km @1625nm | ≤0.2 ps/sqrt(km) |
G.652C | ≤0.40 dB/km @1310nm ≤0.30 dB/km @1550nm | ≤0.5 dB/km @1625nm | ≤0.5 ps/sqrt(km) |
G.652D (covers all above) | ≤0.40 dB/km @1310nm ≤0.30 dB/km @1550nm | ≤0.5 dB/km @1625nm | ≤0.5 ps/sqrt(km) |
Fiber Type | Minimum Design Radius |
G.652D | 30mm |
G.657A1 | 10mm |
G.657A2 | 7.5mm |
G.657B2 | 7.5mm |
G.657B3 | 5mm |
Application:
G.652.D fiber is suitable for:
Networking and communication LAN applications;
Coarse wavelength division transmission in metropolitan area networks and access networks;
Indoor/outdoor fiber optic networks;
G.657.A1/A2/B2 fiber is suitable for:
Installation in small spaces due to its high flexibility;
Cabinets, cabinets and racks with limited space requirements;
G.657.B3 fiber is suitable for:
Installation in small spaces due to its good flexibility;
Typically used in high-speed networks and other advanced applications due to its low attenuation;
VEIVOT High-Performance Bend-Resistant Fiber Solutions
VEIVOT offers high-quality, comprehensive fiber solutions, including bend-resistant fibers that comply with multiple standards including G.652.D, G.657.A1, G.657.A2, G.657.B2, and G.657.B3. Whether you need G.652.D single-mode fiber for long-distance transmission or G.657 fiber with a small bend radius for limited space, we have the right products to meet your needs.
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