Description
ST stands for “Stab & Twist”. The ST connector adopts a metal circular bayonet rotating locking structure, with a long floating spring sleeve built-in to fix the optical fiber. After insertion, it can be rotated half a circle and fixed with the bayonet. And it uses high-precision ceramic ferrule, with excellent loss recovery and insertion performance, making it convenient and fast to use.
ST Patch Cord Features
- High repeatability and high return loss
- High stability and good interchangeability
- Low insertion loss and high reliability
- Three types of fiber end faces: PC, UPC, APC
- The entire series of optical fibers can be used: multi-mode (50/125, 62.5/125, OM3, OM4, OM5), single-mode (G.652, G.655, G.657, etc.)
ST Patch Cord Specification
| Connector type | ST connector |
| Fiber type | G.652D, G.657A2, G.657A1, G.655, G.657B3, OM1 OM2 OM3 OM4,OM5, etc. |
| Wavelength | 1260-1650nm |
| Fiber cores | 1 core, 2 cores or multi-cores fiber |
| Cable diameter | Φ3mm, Φ2.6mm, Φ2.4mm, Φ2.0mm, Φ1.6mm, Φ0.9mm or custom |
| Polish method | UPC, PC, APC（8°）, SPC |
| Cable color | Yellow, white, blue, green, gray, red, black, aqua, orange, purple, etc. |
| Fiber radius of curvature | ≥ 40 mm (G.652D and G.655C); ≥ 20 mm (only G.657A2) |
| Insertion loss | ≤ 0.1dB (Master)
≤ 0.3dB (Standard) Tested by JDS RM 3750 |
| Return loss | UPC ≥ 55dB,APC ≥ 60dB (typ.65dB)–Single mode
UPC≥ 35dB (typ.38dB)-Multimode Tested by JDS RM3750 |
| Repeat ability | ±0.1dB |
| Operating temperature | -40 ° C to 85 ° C |
| Geometry Requirement
(For Single mode) |
Ferrule End face Radius:
7mm ≤ R ≤ 12mm (APC) 10mm ≤ R ≤ 25mm (Standard) Apex Offset ≤ 30 μm (Master) Apex Offset ≤ 50 μm (Standard) Undercut -50nm ≤ U ≤ 50nm Tested by DORC ZX-1 |
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