Rayoptic’s in-house laboratory can perform the complete Telcordia GR-326-Core test program for applicable fiber optic connector platforms.
Our testing capability includes ferrule endface geometry inspection, thermal aging, thermal cycling, humidity aging, humidity/condensation cycling, dry-out and post-condensation thermal cycling, vibration, flex, twist, proof testing, transmission with applied load, impact, durability, connector installation, and end-of-test optical and mechanical evaluation.
We can also perform selected test requirements aligned with Telcordia GR-3120-Core and GR-771-Core, including proof testing, water immersion testing, temperature cycling, humidity aging, and 85°C/85% RH environmental testing.
These tests help verify optical performance, mechanical reliability, sealing performance, and long-term environmental durability before shipment.
After the 353ND epoxy has cured, Rayoptic inspects 10% of production samples to verify epoxy fill quality in the ferrule.
Each sample is checked to confirm that the ferrule is fully filled, the optical fiber is securely embedded in the epoxy, and no voids or air bubbles are present.
All single-mode and multimode fiber optic connectors manufactured by Rayoptic undergo 100% insertion loss (IL) and return loss (RL) testing.
Measurements are verified against the applicable product specifications and the acceptance criteria shown in the table below.
| Ferrule Polish | Singlemode | Multimode | Standard | |||
| APC | UPC | PC | ||||
| Insertion Loss (dB) | Typical | Max. | Typical | Max. | 0.2 | IEC 61300-3-4 method B |
| 0.2 | 0.3 | 0.15 | 0.3 | |||
| 0.15 | 0.2 | 0.15 | 0.2 | NA | GR-326-Core Issue 4 | |
| Return Loss (dB) | >60 | >50 | NA | IEC 61300-3-6 method 1 | ||
| >65 | >55 | NA | GR-326-Core Issue 4 | |||
All single-mode and multimode fiber optic connectors manufactured by Rayoptic undergo 100% inspection and cleaning of the polished ferrule endface before shipment.
Inspection is performed at 200× and 400× magnification to verify that each endface meets the applicable cleanliness, scratch, defect, and acceptance criteria shown in the table below.
| Zone | Regions(µm) Singlemode | Regions(µm) Multimode | Scratches | Defects | Standard |
| A:Core | 0-25 | 0-65 | None | None | IEC 61300-3-35 |
| B:Cladding | 25-120 | 65-120 | None | None | |
| C:Adhesive | 120-130 | 120-130 | None | None | |
| D:Contact | 130-250 | 130-250 | None | None | |
Rayoptic provides single-mode fiber optic connectors with a standard 3D endface geometry pass rate of ≥85%.
For applications with more demanding performance requirements, higher pass-rate options of 90% or 100% are available upon request. Ferrule endface geometry is evaluated in accordance with the applicable IEC 61755 and Telcordia GR-326-Core requirements shown in the table below.
| Parameters | APC IEC61755-3-2 GR-326-Core | UPC IEC61755-3-1 GR-326-Core |
| Radius of Curvature(mm) | 5 to 12 | 10 to 25 |
| Fiber Undercut and Protrusion(nm) | -100 to +100 | -100 to +100 |
| Apex Offset(µm) | 0 to 50 | 0 to 50 |
| Angle Error(°) | 8±0.3 | / |
| Key Error(°) | Min -0.5 Max. +0.5 | / |
Rayoptic engineers perform straight-pull and 90° side-pull tests on optical fiber connectors in accordance with ANSI/ASQ Z1.4, General Inspection Level I. A zero-acceptance sampling plan is applied: Ac = 0 and Re = 1. These tests help ensure that the connectors deliver reliable mechanical performance and maintain their functionality during installation.
| Parameters | Reinforced Connector | Conditions | Standard | Requirement |
| Straight Pull | SC FC LC ST MPO etc. (Mounted 1.6-2.0-3.0mm cable) | Magnitude of the force: 68N Speed: 5N/S Point of application : 0.5m of connector end Duration: 300s | IEC 61300-2-6 GR-326-Core Issue 4 4.4.3.4 | IL<0.3dB RL>50dB(UPC) ,>60dB (APC), |
| 90° Side Pull | Magnitude of the force: 34N Speed: 5N/S Point of application : 0.5m of connector end Duration: 300s | IEC 61300-2-42 GR-326-Core Issue 4 4.4.3.4 |
| Parameters | Reinforced Connector | Conditions | Standard | Requirement |
| Straight Pull | Hardened Connector serviced OSP | Magnitude of the force: 450N Speed: 5N/S Point of application : 0.5m of connector end Duration: 300s | IEC 61300-2-6 GR-3120-Core | IL<0.3dB RL>50dB(UPC) ,>60dB (APC), |
| 90° Side Pull | Magnitude of the force: 67N Speed: 5N/S Point of application : 0.5m of connector end Duration: 300s | IEC 61300-2-42 GR-3120-Core |
In accordance with our control plan, thermal aging and thermal cycling tests are conducted quarterly. These tests evaluate the reliability of connector assemblies and simulate the thermal stresses they may encounter during transportation and in-service operation.
| Test | Conditions | Standard | Requirement |
| Thermal Age Test | Temperature: 85℃ (185°F) Humidity: 85% RH Duration: 168 hours (7 days) | GR-326-Core Issue 4 4.4.2.1 | IL<0.3dB RL>50dB(UPC) ,>60dB (APC), |
| Thermal Cycle Test | Temperature: Cycle -40℃ to +75℃ Humidity: Uncontrolled Duration: 21 Cycles, 168 hours (7 days) | IEC 61300-2-22 GR-326-Core Issue 4 4.4.2.2 |
For fiber-optic connectivity products used in outside plant (OSP) and other harsh environments, including hardened connectors, optical H connectors, MSTs, NAP boxes, CTO boxes, and fiber access terminals (FATs), Rayoptic performs 100% air-tightness testing in accordance with IEC 61300-2-38.
Our products are designed to meet the appropriate ingress-protection requirements for their intended installation environment, including IP67 or IP68 ratings for aerial, pole-mounted, wall-mounted, pedestal, and handhole applications.
Pre-connectorized MSTs and OptiTap flat drop cables are often installed in manholes, handholes, and vaults during FTTH deployments. To verify their sealing performance, Rayoptic conducts water-immersion testing that simulates prolonged submersion in these demanding field environments.
Our pre-terminated terminals and drop cable assemblies are evaluated against applicable water-resistance requirements in Telcordia GR-771 and GR-3120. Only products that pass our verification process are approved for shipment.
With our expertise in fiber optic connectivity, we deliver reliable, scalable, and tailored solutions to help you stay ahead in a fast-moving market.
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Shenzhen, Guangdong 518107, China
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