How to purchase an optical power meter, light source, and optical multimeter?
Optical wavelength: Currently, there are basically two types of optical wavelengths used in communication departments: 1310nm and 1550nm
Optical power: Currently, the power range tested by the telecommunications, China Unicom, China Mobile, China Tietong, and China Netcom departments is -70dbm~+3dbm, which basically meets the requirements; The broadcasting and television department (Shitong Company) sometimes tests high power, requiring a power testing range of -55dbm to+20dbm
Light source: The wavelengths used by the communication department are 1310nm and 1550nm, so the corresponding instrument light source used should also be 1310nm and 1550nm
Red light source: Currently, the commonly used red light source is 650nm. Highly favored by workers in engineering construction and maintenance. It can visually display the disordered fibers of optical fibers and easily determine the on/off of tail fibers, which is a powerful supplement to OTDR. It is widely used in engineering and even more frequently than optical power meters. It is recommended to purchase an optical power meter or multimeter with a red light source, which can greatly facilitate engineering applications.
Light source output power: Output power refers to the output optical power of a stable light source after being preheated and stabilized in a specified operating mode. There are two types: LED and LD. LED belongs to the light source with very low output power when producing light-emitting diodes, and the common output is ≤ -10dbm; LD belongs to the laser generation source, usually using a light source ≥ -10dbm. With a high output power of the light source, it is convenient to test the optical attenuation value of long-distance fibers.
Light source stability: The power stability of a stable light source refers to the degree of change in the output light power from time T0 to time T1 after the stable operation of the stable light source in the specified working mode and preheating. National standard: ≤ 0.1db (15min) ≤ 0.5db (5min)
Optical Multimeter: Currently, it has powerful functions and is a good choice for engineering, daily maintenance, or teaching. It is particularly suitable for fiber loss measurement in the communication field. The test package provides high-precision metal plug calibration optical jumpers, a sturdy shock-absorbing carrying case, and a cleaning rod specifically designed for cleaning optical interfaces. The manifestation of customer application needs is also your wise choice!
Optical attenuation value: Communication departments usually need to test the optical attenuation value of a section of optical fiber, which is the decrease in optical power of the light source after passing through the optical fiber. The instruments required are: light source, optical power meter
Through the above introduction, with an understanding of various indicators and parameters of optical testing, one can make choices for their own optical power meter, light source, and optical multimeter.
