| Code | 664078 | Type | Fiber Optic Accessories | |
| End-Face Angle | 0° | Outer Diameter | 1.8mm | |
| Mating Length | 5.5mm | Fiber Type | 780HP | |
|   Numerical Aperture (NA) | 
  0.12 | 
Fiber Length | 1.5m | |
|   AR Coating | 
  850 ± 15nm | 
Capillary Tube Material | Borosilicate Glass | 
End-Face Angle: 0°
Fiber Length: 1.5 m
Capillary Outer Diameter: 1.8 mm
The fiber pigtail ferrule consists of an optical fiber, a precision glass capillary tube, and adhesive for fixation. A two-component thermosetting epoxy adhesive is typically used due to its low thermal expansion coefficient and high bonding strength. Additionally, a layer of soft adhesive is applied at the tail end where the fiber contacts the capillary tube to protect the fiber from breakage caused by mechanical stress or vibration.
The 0° polished end-face design minimizes beam deviation from the optical axis when paired with collimating lenses of the same 0° end-face specification, making it ideal for precise alignment and fiber coupling setups.
Although the end face is coated with an anti-reflection (AR) coating, the flat surface may still produce some back reflection. Therefore, for applications with stringent return loss requirements, an 8° angled end-face pigtail is recommended instead.









                                            
                                    




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