Inner Mongolia optical cables typically follow ITU-T G.652 single-mode fiber standards and Mongolian national installation regulations, ensuring high-speed, low-loss broadband transmission.

Fiber Characteristics

The optical fibers used in Inner Mongolia are generally single-mode fibers designed for both 1310 nm and 1550 nm wavelength regions, following ITU-T G.652 recommendations. Key fiber parameters include:

• Mode Field Diameter (MFD): Determines light propagation and coupling efficiency.
• Cladding Diameter: Standardized at 125 µm for single-mode fibers.
• Core Concentricity Error & Cladding Non-Circularity: Ensures minimal signal distortion.
• Cut-off Wavelength: Typically around 1260–1320 nm for G.652 fibers.
• Attenuation Coefficient: Low-loss fibers with typical attenuation of 0.35 dB/km at 1310 nm and 0.22 dB/km at 1550 nm.
• Chromatic Dispersion: Managed to minimize pulse broadening, with longitudinal uniformity maintained across the fiber length.
• Macrobending Loss: Controlled to reduce signal loss when fibers are bent during installation.
• Polarization Mode Dispersion (PMD): Specified to ensure high-speed data transmission reliability .

Cable Attributes

Cables are designed to protect the fiber and facilitate installation:

• Armored or Sheathed Outer Layer: For underground or harsh environments.
• Loose Tube or Tight-Buffered Construction: Depending on installation type.
• Mechanical Strength: Tensile strength and crush resistance to withstand environmental stress.
• Environmental Resistance: Temperature, moisture, and UV resistance for aerial or exposed installations .

Installation Standards in Inner Mongolia

Optical cable deployment follows Mongolian national standards:

• MNS 5207:2023: Fiber optic cable installation and technical requirements.
• MNS 6597:2016 & MNS 5278:2003: Standards for underground and aerial cable installation.
• Micro-Trenching: Narrow, shallow trenches for urban areas to minimize disruption.
• Underground Installation: Using armored sheathed cables in ducts or conduits for durability and low in-service damage.
• Aerial Installation: Cables fixed between poles or buildings, with special-purpose cables for high-voltage or lightning-prone areas .

Network Deployment Considerations

• GPON Networks: Optical cables are used to connect OLTs to ONUs in province centers and rural areas, supporting broadband, TV, and telephony services.
• Environmental Adaptation: Cables are selected for cold, arid, or sparsely populated regions, ensuring reliable connectivity across Inner Mongolia's vast territory .
• Link Design: Statistical and worst-case design methodologies are applied to ensure attenuation, dispersion, and differential group delay meet system requirements .

Summary

Inner Mongolia's guiding optical cables combine ITU-T G.652 single-mode fiber specifications with Mongolian national installation standards, ensuring high-speed, low-loss, and durable broadband infrastructure. Deployment methods include underground, aerial, and micro-trenching installations, with cables engineered for environmental resilience and long-term network performance. These parameters support both urban and remote area connectivity, enabling reliable telecommunications and broadband services across the region.