Technical Specifications of G652 Optical Fiber

G.652 is a standard single-mode optical fiber with a core diameter of 8–10 µm, cladding diameter of 125 µm, low attenuation, near-zero dispersion at 1310 nm, and excellent mechanical and bending performance.

Geometrical Characteristics

• Core diameter: 8–10 µm
• Cladding diameter: 125 µm
• Mode field diameter (MFD): ~9.2 ± 0.4 µm at 1310 nm, ~10.4 ± 0.5 µm at 1550 nm
• Core-cladding concentricity error: tightly controlled to minimize signal loss
• Cladding non-circularity: minimized to ensure uniform light propagation

Optical Characteristics

• Zero-dispersion wavelength: around 1310 nm, suitable for both 1310 nm and 1550 nm transmission
• Chromatic dispersion: near zero at 1310 nm; ~17 ps/nm·km at 1550 nm, manageable with dispersion compensation
• Attenuation: approximately 0.35 dB/km at 1310 nm and 0.20 dB/km at 1550 nm
• Polarization mode dispersion (PMD): low, with reduced limits for certain categories (G.652.C and G.652.D)

Mechanical and Environmental Characteristics

• Tensile strength: typically exceeds 5 GPa
• Bending radius: maintains performance with a minimum radius of 30 mm
• Coating: plastic protective layer for mechanical and environmental protection
• Macrobending loss: minimized to ensure signal integrity in tight installations

Transmission and System Attributes

• Wavelength compatibility: optimized for 1310 nm but also suitable for 1550 nm
• Non-linear coefficient: low, reducing signal distortion in long-distance transmission
• Longitudinal uniformity: consistent chromatic dispersion along the fiber length
• Link design: supports statistical and worst-case design methodologies for concatenated cables

Applications

• Long-distance backbone networks and metropolitan area networks
• Submarine cable systems and international fiber optic communications
• Access networks such as Fiber to the Home (FTTH) and Fiber to the Building (FTTB)
• Data centers requiring high-speed, low-latency connections G.652 fiber remains the most widely deployed single-mode fiber due to its low attenuation, near-zero dispersion at 1310 nm, and robust mechanical properties, making it suitable for a broad range of optical communication applications .