The Grandway FHS-2D02 is a dual-wavelength single-mode optical laser source designed for accurate fiber optic link testing, calibration, and maintenance. Operating at 1310 nm and 1550 nm, this handheld unit provides stable output power, CW and modulated operation modes, and automatic wavelength identification, enabling reliable insertion loss and continuity measurements when used with compatible optical power meters. Its compact design, high output stability, and adjustable power levels make it suitable for field installation, commissioning, and troubleshooting of single-mode fiber networks.
