High-Performance FC/APC G.657.A2 Simplex LSZH Single-Mode Fiber Optic Pigtail

Welcome to buy the high-performance fc/apc g.657.a2 simplex lszh single-mode fiber optic pigtail with our factory. As one of the leading manufacturers and suppliers in China, we also welcome the customized orders. Consult the price and the quotation with us now.

Manufacturer's Commitment: As a leading global manufacturer of fiber optic interconnect solutions, every FC/APC single-mode pigtail we produce undergoes 100% geometric end-face interferometry and optical performance testing, fully compliant with Telcordia GR-326-CORE and IEC international standards. It is engineered specifically for high-density, low-loss FTTH edge access, telecom backbone networks, and high-return-loss CATV systems.

Product Overview & Core Value

This FC/APC single-mode simplex pigtail features high-specification G.657.A2 bend-insensitive single-mode fiber (with a fiber core diameter of 8.3 µm and cladding outer diameter of 125 µm), providing superior bend performance while maintaining high-bandwidth transmission. The connector utilizes a classic FC metal threaded locking structure, which delivers exceptional mechanical stability and anti-vibration capabilities. The end-face is precision machine-polished using an APC (8° Angle Physical Contact) process, which directs reflected light away from the fiber core, thereby providing an ultra-high return loss of ≥ 60 dB and effectively eliminating back-reflection interference to the light source equipment.

The cable has a 0.9mm outer diameter with an easy-to-strip tight-buffered layer, making it ideal for fusion splicing. The outer jacket is made of fire-safety-compliant LSZH (Low Smoke Zero Halogen) material, dressed in the international standard single-mode identification color-Yellow-to facilitate clean and clear link management.

Analysis of Pigtail Physical Layer Mechanical Structure and Connector Design

The core architecture of the FC/APC connector utilizes a metal threaded coupling mechanism, typically featuring an $M8 \times 0.75\text{ mm}$ thread specification. This mechanism is primarily composed of a high-strength nickel-plated brass alloy or stainless steel housing, a threaded locking nut, and an anti-rotation spring-loaded positioning key (single male key). Compared to push-pull snap-on connectors like SC or LC, the metal threaded locking design of the FC connector provides a long-term threaded clamping force of up to $7.8\text{ N}$. This effectively eliminates instantaneous fiber disconnection or beam drift caused by loosening or micro-displacements in high-vibration, high-tensile, or harsh industrial manufacturing environments (such as test benches and vehicular communication systems).

The core alignment component of the connector is a high-precision zirconia ceramic ferrule with a nominal outer diameter of $\phi 2.5\text{ mm}$. The concentricity tolerance of the internal ferrule hole for fiber core positioning is strictly constrained within $\le 0.7\ \mu\text{m}$ (with ultra-high precision grades reaching up to $\le 0.5\ \mu\text{m}$), ensuring that the extremely small core of the single-mode fiber can achieve sub-micron physical alignment. Internally, the ferrule is secured by a highly stable ferrule holder made of polyacetal or polybutylene terephthalate (PBT). The rear end transitions into a strain relief boot made of thermoplastic vulcanizate (TPV) or polyolefin material, providing bend protection to prevent the pigtail from being damaged by sharp bends.

In terms of the optical cable's physical layer structure, this product adopts a typical indoor simplex tight-buffered cable (GJFJV) configuration, with a nominal outer diameter of $0.9 \pm 0.05\text{ mm}$. Its interior consists of a silica bare fiber with an outer diameter of $125\ \mu\text{m}$ and a dual-layer acrylate primary coating with an outer diameter of $242\ \mu\text{m}$ or $245\ \mu\text{m}$. The outer layer is directly extruded with a high-density LSZH (Low Smoke Zero Halogen) polymer flame-retardant tight buffer material. The yellow outer jacket is the internationally recognized identification color for single-mode fiber, facilitating intuitive visual isolation and link differentiation from blue (conventional single-mode), magenta (OM4 multimode), or aqua (OM3 multimode) patch cords in dense patching systems.

Core Advantages: Why Choose Our FC/APC G.657.A2 Pigtail?

• Telecom-Grade Ultra-Low Loss & Ultra-High Return Loss: Features a standard insertion loss of ≤ 0.20 dB and a return loss of ≥ 60 dB. This minimizes your link power budget and eliminates reflection-induced noise, ensuring stable long-distance signal transmission.
• Exceptional Bend-Insensitive Performance (G.657.A2): Utilizes a bend-insensitive fiber core that is highly insensitive to radiation loss caused by bending. It effectively suppresses macro-bending attenuation even when bent at a tight radius inside home weak-current boxes, corridor enclosures, or cramped splice trays.
• High-Durability FC Metal Connector: Designed with a threaded metal locking mechanism for tight and secure mating. It withstands frequent matings and external vibrations, preventing poor contact caused by loosening-making it the ideal choice for test instruments, industrial environments, and high-frequency maintenance interfaces.
• LSZH Flame Retardant & Safe Outer Jacket: In the event of external fire or high temperatures, the jacket releases minimal smoke and absolutely zero toxic, acidic halogen gases. This not only guarantees the evacuation safety of personnel but also prevents acidic gases from causing secondary destructive chemical damage to precision server room equipment.
• High-Density 0.9mm Easy-to-Splice Tight Buffer: The 0.9mm thin diameter structure is lightweight and highly flexible, offering excellent termination and stripping performance. This allows it to fit perfectly into the cramped fusion splicing spaces inside fiber termination boxes and high-density Optical Distribution Frames (ODFs).

Technical Specifications Table

This structured technical data is compiled to assist system integrators and technical procurement managers in evaluating system compatibility:

Material Properties and International Fire Compliance of Low Smoke Zero Halogen (LSZH) Jackets

The low smoke zero halogen (LSZH) thermoplastic polymer material used for the pigtail's outer jacket is an eco-friendly, flame-retardant formulation. It is primarily made by blending a large proportion of halogen-free flame retardants, such as aluminum hydroxide ($\text{Al(OH)}_3$) and magnesium hydroxide ($\text{Mg(OH)}_2$), into an ethylene-vinyl acetate (EVA) copolymer or polyolefin matrix. In high-temperature fire environments, this material releases crystallized water and forms a dense carbonized layer, which isolates oxygen and suppresses charring.

This material possesses excellent physical properties, including resistance to vertical flame propagation, minimal smoke emission, and completely zero halogen acid gas emissions. Its international safety access and flame-retardant ratings fully comply with the core testing standards listed in the table below:

In enclosed telecom server rooms or high-density network cabinets, utilizing LSZH pigtails not only maximizes the evacuation safety of internal O&M personnel under extreme fire conditions but, more critically, prevents acidic halogen mist from depositing onto and corroding chips. This avoids the physical and chemical risks of permanent corrosion damage to an entire rack of high-density, expensive servers and switching equipment after a fire is extinguished.

Strict Quality Control & Authoritative Compliance 

• 3D Interferometer Test: Utilizing industry-leading geometric interferometers, we strictly measure the Radius of Curvature, Apex Offset, and Fiber Height to guarantee flawless physical contact of the polished end-face.
• Dual Optical Performance Inspection: Before leaving the factory, every single pigtail is individually tested for insertion loss (IL) and return loss (RL) using precision light sources and power meters, with a unique serialized test report attached directly to the product packaging.
• 400x End-Face Visual Inspection: A comprehensive 400x electronic microscope inspection ensures the end-face is completely free of scratches, pits, micro-dust, or any cross-contamination.
• Certified Compliance: Our manufacturing facility holds ISO9001 Quality Management System certification. The products are fully compliant with the RoHS directive, CE certification, and CPR (Construction Products Regulation) flame-retardant standards.

Typical Application Scenarios

• Fiber to the Home (FTTH) Edge Access: Ideal for high-density fusion splicing or mechanical cold splicing inside corridor distribution boxes and user multimedia terminal boxes with tight spaces.
• Telecom Central Offices & Optical Distribution Frames (ODFs): Seamless integration for compact pigtail termination and transition connections to backbone fiber cables within fiber distribution cabinets.
• Cable Television & Broadcast Networks (CATV): High-bandwidth, high-power multi-channel analog/digital video signal transmission in links highly sensitive to reflection noise.
• Precision Optical Instruments & Laboratory Testing: Serves as external connections and reference links for precision testing equipment such as Optical Time Domain Reflectometers (OTDRs), light sources, and optical power meters.