A Guide To Optical Power Meter

Definition – What is The Optical Power Meter?

Once you install and terminate fiber optic cables, it’s time to test them. A test should be conducted for each fiber optic cable plant for three main areas: continuity, loss, and power. To do this, you’ll need a fiber optic power meter. An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other generaly purpose light power measuring devices are usually called radiometers, photometers, laser power meters, fiber optic meters or lux meters.

A typical optical power meter consists of a calibrated sensor, measuring amplifier and display. The sensor primarily consists of a photodiode selected for the appropriate range of wavelengths and power levels. On the display unit, the measured optical power and set wavelength is displayed. Power meters are calibrated using a traceable calibration standard such as a NIST standard.

A traditional optical power meter responds to a broad spectrum of light, however the calibration is wavelength dependent. This is not normally an issue, since the test wavelength is usually known, however it has a couple of drawbacks. Firstly, the user must set the meter to the correct test wavelength, and secondly if there are other spurious wavelengths present, then wrong readings will result.

Before Using a Power Meter

There are a few things you should do to prepare before using a fiber optic power meter. First, read the manual and run some practice tests with your power meter before going onto the job site. Next, prepare documents showing how and where all your cables are installed. Don’t depend on memory because you can easily lose track of your cables, especially if it’s a large project. Also, create a worksheet to document your testing data. Some power meters have a memory feature for keeping your data. These come in handy for large projects as well.

Use Safety Precautions

It’s important to follow safety precautions while testing fiber optic cables with a power meter. Wear eye protection when working with high power cables. Even with low-power layouts, it’s wise to check the connectors with your power meter before looking.

Using a Power Meter for Power Measurement

When measuring fiber optic power with a power meter, attach the meter to the cable. Turn on the source of power (transmitter), and view the meter’s measurement. Compare the meter measurement with the specified correct power for that particular system to be sure it doesn’t have too much or too little power. The reason correct power measurement is so important with fiber optic cables is because the system works similar to electric circuit voltage, and the power must be just the right amount to work properly.

Testing Loss with a Power Meter

A power meter is used to test loss, but a test source is needed as well. The meter will measure the optical power that is lost in every part of the cable. The cable is mated with a working reference cable. Two methods used in loss testing are single-ended loss and double-ended loss. With single-ended loss testing, only the launch cable is used. With double-ended loss testing, a receive cable is also attached to the meter.

There are certain loss guidelines to follow for connectors, splices, multimode fibers, and singlemode fibers. You should understand these guidelines as well as the standard formula for calculating loss before getting started. Other tools that may be required for the processes above include optical loss test kits, matching reference test cables, mating adapters with hybrids, a visual fault locator or fiber tracer, cleaning items, and an ODTR (for outdoor networks). Fiber optic cables can be of great value to companies if they work properly. Use a fiber optic power meter and other useful tools to ensure that your fiber optic system will operate smoothly around the clock.

Three types of equipment can be used to measure optical power loss:

1. Component equipment – Optical power meters and Stabilized Light Sources are packaged separately, but when used together they can provide a measurement of end-to-end optical attenuation over an optical path. Such component equipment can also be used for other measurements.

2. Integrated test set – When an stabilized light source and optical power meter are packaged in one unit, it is called an integrated test set. Traditionally, an integrated test set is usually called an OLTS. Generic Requirements for Hand-Held Stabilized Light Sources, Optical Power Meters, Reflectance Meters, and Optical Loss Test Sets, discusses OLTS equipment in depth.

3. An Optical Time Domain Reflectometer (OTDR) can be used to measure optical link loss if its markers are set at the terminus points for which the fiber loss is desired. The accuracy of such a measurement can be increased if the measurement is made as a bidirectional average of the fiber.

Introduction To PON Power Meter FS607P

PON Power Meter FS607P


PON optical power meter is a tester designed for design, operation and maintenance of FTTx network. It is able to concurrently measure the optical power values of voice, data and video signals. It is an ideal choice for the construction and maintenance of FTTx network works. The FS607P is with high quality HD TFT color LCD, and the dual-port through the design, guarantee the full communication testing from the OLT to the ONT.


. Providing simultaneous measurement at all three wavelengths on the fiber (1490nm, 1550nm, 1310nm)
. Used in Burst mode measurement of 1310nm upstream
. Dual-port through the design, guarantee the full communication testing from the OLT to the ONT
. Three status LEDs represents different optical signal conditions of Pass, Warn and Fail respectively
. Easy to use, simply connect the fiber to read the results
. HD TFT color LCD
. USB communication port enables data transfer, easy and quick
. 200 measurement items can be saved in PON power meter or computer for data review
. Through the background software setting threshold, upload data, calibration wavelength
. Auto power off function, and time settings on the device, the threshold setting


. FTTx / PON opening: In the opening stage of all PON signals are measured to verify and ensure that meet network standards
. FTTx / PON maintenance: routine maintenance of various transport issues, such as: connector end surface contamination, fiber macro bending, breaking, Optical fault, etc.; that will have a loss of signal or transmission performance simultaneously measure and display 1310 upstream, 1490 downstream and 1550 downstream the power of three wavelength values.

Standard Packing

. FS607P PON optical power meter
. Operation Manual
. Product Warranty Cards
. Certificate
. Portable Bag

FiberStore is specializing in supplying fiber optic components and network equipment, all the products are qualified because they have been 100% tested before delivery, especially the fiber optic power meter. And a special discount will be provided if you need this brand new PON Power Meter FS607P at a large quantity. What’s more we also provide miller fiber optic tools and fiber termination tools.

Introduction To Optical Power Meter FS6070

Fiber optic power meter is an essential fiber test instrument used for absolute optical signal measurement as well as fiber optic loss related measurement. The term usually refers to a device for testing average power in fiber optic systems. Fiber optical power meter is a tool for telecom and CATV network. This handheld optical power meter features ingenious appearance, wide range of power measurement, high accurate test precision and user automatic self-calibration function.

Optical Power Meter FS6070



Power Meter FS6070 series with a chip microcomputer control and the large-screen graphics LCD, it can provide precision measurement from 850 to 1625nm wavelength ranges and measuring range including -70dBm to +6dBm, -50dBm to +26dBm.

The FS6070 power meter can test the PM power to the light, light stability, insertion loss, optical transmittance, reflectance of light and so on. It widely used in optical fiber communications, Telecom, Fiber Optical Sensors etc. It is indispensable for scientific research and engineering construction.


. Self-calibration function
. High performance import laser detector
. High sensitivity and large dynamic range 0.01dBm precision
. Automatically converted Range
. Small size, light weight, high reliability
. Battery-powered, convenient field work
. Line display or relative loss displayed


. Fiber optic production and research
. Testing and maintenance of fiber-optic network
. Teaching and testing in optical communication

Standard Package

.FS6070 Optical Power Meter, Operation Manual, Product Warranty Cards, Certificate, Desiccant, Portable Bag

Fiberstore is specializing in supplying fiber optic components and network equipment, all the products are qualified because they have been 100% tested before delivery, especially the optical power meter. What’s more we also supply other fiber testerssuch as OTDRFiber optic light sourcevisual fault locators and more.