PCVFL-1 Precision Coupled Visual Fault Locator OWL

Optical Wavelength Laboratories (OWL), OWL

PCVFL (Precision Coupled Visual Fault Locator) is a light-weight, hand-held tool used to quickly troubleshoot faults in the continuity of both single mode and multi-mode fibers, especially at fiber launch points or in OTDR dead zones. A high intensity visible red laser beam is precision-coupled into the optical fiber; breaks and micro-bends in the fiber deflect the red light into the fiber jacket, producing a red glow at the point of the fault.



4 in stock (can be backordered)

SKU: 3101062 Category: Tag:



  • Model Number PCVFL-1
  • Visual Range up to 5 km (3.1 miles) in both multimode and singlemode fibers
  • Optical Output: 0dBm red laser at least 1 mW red laser
  • CW Mode – 15 hours use on one 9v battery
  • Pulsed Mode – 120 hours use on one 9v battery – Pulsed at 6 Hz w/12.5% duty cycle
  • Low battery indicator
  • Handheld /Lightweight¬†6 ounces
  • Dimensions 4.94 x 2.75 x 1.28 in

Typical battery life in CW mode is 15 hours, and the short 12.5% duty cycle in pulsed mode extends the battery life to 120 hours of continuous use.

Unlike standard light pens, the PCVFL precision-coupled visual fault locator (VFL) is optimized for fiber optics. An optical ball lens placed near the laser output focuses the red laser light for optimum coupling into optical fibers (often most pen-style laser pointers do not have this feature), and special electronics prevent the red laser from burnout (a common problem with pen-style red laser pointers), increasing the life of the VFL.

The PCVFL ships standard with a 2.5mm universal connector port.

Additional information

Weight 1 kg
Dimensions 20 × 14 × 10 cm



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