The F-D1/F-D2 laser source is a portable fiber optic testing tool designed for installation, maintenance, and acceptance of fiber optic networks. It ensures accurate, reliable, and efficient testing in various optical environments. Its user-friendly design and optional built-in VFL make it an essential tool for telecom engineers, data center technicians, and fiber optic installers.
Product Features
✅ All-in-One Solution
This handheld laser source combines both single-mode and multi-mode testing capabilities in one device, eliminating the need for separate equipment. It supports 850 nm, 1300 nm, 1310 nm, 1550 nm, for various fiber testing scenarios.
✅ High Stability & Accuracy
Featuring an ultra-stable output with a deviation of only ±0.05 dB per hour, this laser source ensures reliable and repeatable test results. Whether used in field operations or lab environments, it provides consistent performance for accurate loss measurement and link verification.
✅ Extended Battery Life for Field Use
The device delivers over 16 hours of continuous operation. This extended battery life supports long shifts and remote fieldwork without frequent recharging or power interruptions, enhancing productivity and convenience.
✅ Easy-to-Use & Intuitive Operation
Designed with a clear button layout, the laser source allows one-touch switching between modulation frequencies, attenuation levels, and wavelengths. Even beginners can quickly master its functions, reducing training time and improving testing efficiency.
✅ Multi-Wavelength & Optional VFL
With support for four key wavelengths and an optional built-in Visual Fault Locator (1 mW / 10 mW), this tool enables rapid fiber identification, continuity checking, and fault location. It’s ideal for troubleshooting and verifying fiber connections in complex networks.
Spec Sheet
| Items/Model | F-D1 | F-D2 |
| Wavelength | MM: 850/1300 nm±20 nm SM: 1310/1550 nm±20 nm |
850/1300/1310/1550 nm± 20 nm |
| Output Power | ≥-10 dBm@850/1300 nm; ≥-6 dBm @ 1310/1490/1550/1625 nm | |
| Laser Type | FP-LD (MM) ; DFP-LD (SM) | |
| Stability | ±0.05 dB/hour; ±0.1 dB/8 hours | |
| Modulation Frequency | 270 Hz, 1 kHz, 2 kHz | |
| Interface Type | FC/PC (customizable) | |
| Output Mode | CW, 270 Hz, 1 kHz, 2 kHz | |
| Power Adjustment | 6 dB range, adjustable in 1 dB steps | |
| Battery Type | 3 AA batteries | |
| Auto Shutdown | 10 minutes of inactivity | |
| Built-in VFL | 1 mW/10 mW (optional) | |
Package Content
- TFN F-D1/F-D2 Handheld Laser Source × 1
- User Manual × 1
- 3× AA Batteries × 1 set
- Protective Carrying Case × 1
- FC/PC Adapter (or customized connector) × 1
- Optional: Built-in VFL module (if selected)
Total items
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