How HUALUE provides customers with high-quality fiber optic patch cord products.

How HUALUE provides customers with high-quality fiber optic patch cord products.

 As the core connection component of the optical communication network, the quality of optical fiber patch cords directly affects the stability and efficiency of signal transmission. This article will systematically explain the path to achieve high-quality optical fiber patch cords from three dimensions: raw material quality control, production details, and quality verification.

 To distinguish high-quality fiber patchcords, we should first understand the IEC-61300 standard. The IEC-61300 standard classifies fiber patchcords into grades A, grade B and grade C(as shown in the following figure):

The table above shows the classification definition of fiber optic connectors in the lEC 61300 standard. Grade A patch cords are significantly better than Grade B/C in terms of insertion loss (IL). The average IL must be ≤0.07 dB and the maximum IL must be ≤0.15 dB, which places strict requirements on the manufacturing process. HUALUE achieves large-scale production of Grade A patch cords through the following core technologies.

High-precision ceramic ferrule: high-quality zirconia ceramics (tolerance ≤0.3 μm). Low-temperature zirconia ceramics (850 degrees) are commonly used in the market. Low-temperature zirconia ceramics have a low Mohs hardness and are easy to break during the plugging and unplugging process. HUALUE uses high-temperature zirconia ceramics (1250 degrees) to extend the service life of zirconia ceramics and strictly screens zirconia ceramics. The concentricity tolerance range of the selected zirconia ceramics is ±0.2μm.

（Left: Low temperature ceramic ferrule / Right: High temperature ceramic ferrule）

Ultra-low loss optical fiber: G.657.B3 bend-resistant optical fiber is selected. The theoretical attenuation value at a wavelength of 1550 nm is ≤0.17 dB/km, which is 80% lower than the bending loss of conventional G.652D optical fiber. HUALUE strictly controls the optical fiber. We know that the standard bare optical fiber diameter is 124.8μm-125.2μm. HUALUE strictly controls the optical fiber tolerance range at ±0.2μm, and will screen out the best matching zirconia ceramic according to the diameter of the bare optical fiber.

Fiber optic connector: HUALUE uses IEC 61754 connectors to ensure the matching of the connector during the connector process. Reference (IEC 61754-4, IEC 61754-20, IEC 61754-7)

1 Full process quality verification

The minimum tests that the patchcord must meet are:

1.1-Visual Inspection
Objective:	To verify the correct condition of the ferrule.
Standard -
Procedure:	The ferrule will be inspected at a magnification of 400X or higher.
Approval Criteria:	No scratches, cuts, or excess adhesive should be found.

1.3- Return Loss (RL)
Objective:	To verify that the return loss (RL) meets the requirements.
Standard	IEC 61300-3-6 OLCR Method
Procedure
Pass Criteria:	RL(UPC)@1310nm/1550nm ≥ 50 dB and RL(APC)@1310nm/1550nm ≥ 60 dB

Summary: 

HUALUE is committed to providing high-quality fiber optic patch cord products to global customers, including FC, SC, ST, LC, MTP and other interface types, suitable for different network devices and application scenarios. Provide customized services, customize fiber type, length, sheath material, etc. according to the specific needs of customers, to ensure that the products fully meet the technical requirements of customers. HUALUE always adheres to the principle of 'quality first, customer first', and is committed to providing customers with high-quality fiber optic patch cord products and excellent services.