As we all know, the fiber optical patch cord is composed of two ends of an optical cable, so in order to distinguish the specific parameters of the optical fiber, it is generally distinguished from the following aspects: optical fiber coloring, optical cable outer sheath color, optical fiber connector shell color, optical fiber adapter shell color, etc.
Fiber color code
As table, each optical fiber for optical patch cord has its own unique optical fiber code and color, which is mainly to better identify the optical fiber jumper and quickly manage and maintain the optical fiber link.
| Fiber code | Fiber color | Mark |
| 1 | blue | 1/BL/1-BL |
| 2 | orange | 2/OR/2-OR |
| 3 | green | 3/GR/3-GR |
| 4 | brown | 3/GR/3-GR |
| 5 | gray | 5/SL/5-SL |
| 6 | white | 6/WH/6-WH |
| 7 | red | 7/RD/7-RD |
| 8 | black | 8/BK/8-BK |
| 9 | yellow | 9/YL/9-YL |
| 10 | purple | 10/VI/10-VI |
| 11 | Rose red | 11/RS/11-RS |
| 12 | aqua | 12/AQ/12-AQ |
Color standard of optical cable outer sheath
TIA-598C is the color coding standard of optical fiber jumper formulated by the American Telecommunications Industry Association, which defines the identification scheme of optical fiber and optical fiber jumper. The following are the colors and corresponding fiber patch cord types of fiber patch cords for non military and military applications.
| Sheath color | Fiber optic patch cord for non military applications | optical fiber patch cords for military applications |
| Orange | OM1 62.5μm multi mode patch cord | OM2 50μm multimode patch cord |
| OM2 50μm multi mode patchcord | ||
| Aqua | OM3 50μm multimodo patch cords | Undefined |
| Aqua/Purple |
Aqua is used for OM3 / OM4 optical fiber jumper (and high-grade om2 optical fiber jumper);
Purple OM4 optical fiber jumper used in Europe, now is becoming more and more common in North America. |
Undefined |
| Yellow | OS1/OS2 Singlemode patch cord | OS1/OS2 Monomodo patch cord |
| Blue | （PM）Single mode patch cord | Undefined |
| Gray | Undefined | 62.5μm multi mode patch lead |
| Green | Undefined | 100/140μm multi mode patch cable |
Connector and adapter color standard
In addition to the color of the optical fiber and outer sheath, they can also be distinguished by the color of the connector and adapter of the optical fiber jumper:
| Fiber type | Connector color | Adapter color |
| OM1 62.5μm | Beige | Beige |
| OM2 50μm | Beige | Beige |
| OM3 50μm | aqua | aqua |
| SMF | Blue | Blue |
| SMF APC | Green | green |
summary
Although it is briefly introduced to distinguish different optical fiber jumpers through four colors, there are many types and colors of optical fiber jumpers in the market. Sometimes they can not be distinguished only by these information. At this time, you can check the model and specification of optical fiber jumpers and combine with the actual orders to better distinguish optical fiber jumpers, so as to avoid misleading or wrong analysis.