


Handheld Stable Light Source for Fiber Optic Testing — 1310/1550nm
Stable dual-wavelength fiber optic light source for 1310nm/1550nm single-mode testing, built for telecom contractors, ISPs, and field technicians.
1. Dual-Wavelength Testing: Provides user-selectable 1310nm and 1550nm output for accurate single-mode fiber link loss measurement and daily troubleshooting.
2. Calibrated Output Power: Delivers -5 dBm or better typical output power, helping technicians compare power meter readings with a known stable reference.
3. Three Connector Options: Includes interchangeable SC, FC, and ST output connectors, covering the most common interfaces used in telecom and FTTH projects.
4. Field-Ready Operation: Supports -20°C to +60°C operating conditions with a soft protective silicone case for outdoor installation and maintenance work.
5. Efficient Daily Use: Features a backlit LCD, simple 3-button control, and auto power off after about 30 minutes to reduce battery waste on job sites.
Fiber Optic Light Source Description
The OM-702 Stable Light Source is a fundamental tool for installing and maintaining fiber optic networks. It emits calibrated light at 1310nm and 1550nm to serve as a reliable signal source for measuring insertion loss with a power meter. This instrument is critical for FTTx deployment, cable plant acceptance testing, and network fault finding. We supply this robust light source to telecom contractors, network engineers, and fiber installers.
Optical Light Source Technical Data Sheet
| Parameter | Specification |
| Model | OM-702 |
| Device Type | Handheld Stable Light Source |
| Output Wavelengths | 1310 nm, 1550 nm (User-Selectable) |
| Fiber Mode Compatibility | Single-Mode (SM) |
| Typical Output Power | -5 dBm or better (Calibrated) |
| Output Connectors | Interchangeable: SC, FC, ST |
| Display | LCD with Backlight |
| Power Management | Auto Power Off (after ~30 minutes idle) |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -25°C to +70°C |
| Weight | Approximately 340 g (including case) |
| Key Design Features | Soft Protective Silicone Case, Simple 3-button Operation |
Detail Display





Fiber Test Light Source Applications
1. Fiber Link Loss Measurement: Pair the light source with an optical power meter to test insertion loss across single-mode fiber links. Contractors can verify whether a new cable run meets the required loss budget before handover.
2. FTTH and PON Installation: Use 1310nm and 1550nm output during drop cable, splitter, and subscriber line verification. Installation teams can confirm continuity and detect excessive loss before service activation.
3. Telecom Maintenance Work: Field technicians can inject a stable optical signal into an existing link during routine maintenance. The stable source helps identify connector contamination, bend loss, splice problems, or damaged patch cords.
4. Data Center Fiber Testing: Network teams can use the light source to check single-mode trunk cables, patch panels, and cross-connects. Testing at two wavelengths helps confirm link stability before equipment migration or expansion.
5. Project Acceptance Testing: ISPs, contractors, and project buyers can use the instrument for repeatable acceptance checks after installation. The clear output settings and common connector support make it practical for multi-site deployment teams.
More Details
Dual-Wavelength Fiber Optic Light Source Performance
This fiber optic light source provides stable 1310nm and 1550nm output for single-mode link testing, helping technicians compare received power with a reliable reference signal. When used with an optical power meter, it supports insertion loss checks for installation, maintenance, and acceptance work. The calibrated -5 dBm or better typical output gives field teams a consistent basis for daily measurement tasks.
Field Operation and Connector Flexibility
The instrument is designed for practical field use, with interchangeable SC, FC, and ST output connectors covering common telecom and FTTH interfaces. A backlit LCD helps technicians read settings in equipment rooms, outdoor cabinets, and low-light environments. The simple 3-button operation reduces training time, while the soft silicone case improves handling during repeated site work.
Reliable Support for Overseas Fiber Projects
For overseas distributors, ISPs, telecom contractors, and project buyers, this stable light source is a compact tool for routine fiber testing workflows. The -20°C to +60°C operating temperature range supports varied job-site conditions in different markets, and the auto power off function helps conserve battery life during long installation days. It is suitable for project kits, maintenance fleets, distributor inventory, and fiber testing supply programs for international markets.