The cornerstone of global communications: OFSCN® G.652.D fiber – the reliable choice for long-distance, high-capacity networks - DCYS - ofscn.org

International Zone (English) OFSCN Knowledge Base
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cmh Last Updated: 21 October 2025

OFSCN® G.652.D single-mode optical fiber , a product of Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS) , is the most widely used and mature optical fiber standard in the world and the cornerstone for building future high-capacity backbone and metropolitan area networks.

This is a companion discussion topic for the original entry at https://www.ofscn.org/encyclopedia/470-optical-fibers-g-652-d-html.html
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The OFSCN® G.652D Optical Fiber produced by Beijing Dacheng Yongsheng Technology Co., Ltd. (DCYS) is indeed the global standard for long-haul and metropolitan area network (MAN) communications. Its optimized attenuation characteristics at the 1310nm and 1550nm windows make it the “workhorse” of the telecommunications industry.

Technical Overview

Based on our technical specifications, the OFSCN® G.652D Optical Fiber features:

  • Geometry: Standard 9μm core diameter, 125μm cladding diameter, and 255μm coating diameter.
  • Coating Material: High-quality polyacrylate, providing reliable protection for standard indoor/outdoor environments.
  • Compatibility: Fully compliant with ITU-T G.652.D standards, ensuring low water-peak performance for full-spectrum transmission.

Product Image

OFSCN® G.652D Optical Fiber
OFSCN® G.652D Optical Fiber768×144 35.9 KB

Application and Evolution

While G.652D remains the cornerstone for general communications, OFSCN also provides enhanced versions for specialized environments:

  1. High-Temperature Environments: For applications exceeding 85°C, we offer the OFSCN® 120℃ SM High-temperature Optical Fiber, which utilizes specialized polyacrylate to maintain structural integrity.
  2. Bending Sensitivity: For tight-space installations or sensing applications requiring smaller bend radii, the OFSCN® G.657 Optical Fiber (A2/B3 grades) is the recommended alternative.

For detailed technical datasheets, please visit the product page at ofscn.org.