Fiber Optic Power Meters with Internal Sensor

The PM20 Series of Fiber Optic Power Meters are robust, full-featured, handheld instruments, which together cover the full range of optical fiber applications within the 400 - 1700 nm range with optical powers ranging from -60 dBm to +23 dBm (1 nW - 200 mW). A rugged enclosure, internal sensors, and kickstand make these models ideal for field or lab applications.

Functionality
Efficient, low-power circuitry provides long battery operation. The alphanumeric 8-digit LCD display allows easy power read-outs. The operation of the device is intuitive due to the clearly labeled key pad. All common features like wavelength setting, relative measurements, power read-out, and auto-shutdown are included. The PM20 is powered by a built-in rechargeable NiMH battery or by the included AC adapter that also recharges the battery. The unit comes with an FC fiber adapter. Most industry standard fiber adapters (i.e. SMA, SC, ST, FC, and LC) are available for purchase and can be easily installed.

Thorlabs' Optical Power Meter Selection Guide provides an overview of our complete optical and laser power meter product line, including sensor heads and compatibility information.

Each console come with the following: the console with built-in sensor, FC fiber adapter, 12 VDC power supply (PMPS12), Certificate of Calibration, and operating manual.

Power Meter Model                                               PM20A                                                    PM20C                                         PM20CH
Sensor Specifications
Optical Power Range                      -60 dBm to 16 dBm (1 nW - 40 mW)      -60 dBm to 13 dBm (1 nW - 20 mW)     -50 dBm to 23 dBm (10 nW - 200 mW)
Spectral Range                                                                                                    400 - 1100 nm                                           800 - 1700 nm
Detector Type                                                        Silicon                                                    InGaAs                                            InGaAs
Sensor Size                                                           3.6 mm²                                                 Ø2 mm                                               Ø2 mm
Input Aperture                                                      3.6 mm²                                                    Ø2 mm                                             Ø2 mm
Aperture Thread                                          SM05 Thread (0.535"-40) for Fiber Adapters Fiber Adapter included for FC/PC and FC/APC
Measurement Uncertainty                                                                                        ±5%
Measurement Standard                                                                              NIST Traceable
Optical Damage Threshold                                                                               50 W/cm²
General Console Specifications
Detector Compatibility                                                                                                -
Display Type                                                                                               Alphanumeric 8-Digits LCD
Display Format                                                                                        4 Digit Read Out with Units and Symbols
Power Units                                                                                                        dBm, dB, nW, µW, mW
Resolution                                                                                                                     14 bit
Sample Rate                                                                                                                10 Hz
Dimensions (H x W x D) w/ Holster                                                        125 x 80 x 39 mm (4.9" x 3.1" x 1.5")
Weight                                                                                                                       0.2 kg (0.44 lbs)
Operating Temperature                                                                                         5 °C to 40 °C
Storage Temperature                                                                                           -20 °C to 70 °C
Power Management
Battery Operation                                                                                         Internal NiMH Battery Pack, 150mAh, 6V
Operating Time                                                                                                           50+ hours
Shutdown                                                                                                                    Manual, Auto
Charger                                                                                                            3-Hour Battery Charger Included
Charger Power Supply                                                                              Input: 85 - 265 VAC, 50 - 60 Hz; Output: 12VDC @ 0.85A

Fiber Optic Power Meter Features
InGaAs (PM20C or PM20CH) or Si (PM20A) Sensors
Wavelength Range:
400 nm - 1100 nm (Si)
800 nm - 1700 nm (InGaAs)
Power Ranges:
-60 dBm to 16 dBm (1 nW - 40 mW) for PM20A
-60 dBm to 13 dBm (1 nW - 20 mW) for PM20C
-50 dBm to 23 dBm (10 nW - 200 mW) for PM20CH
Interchangeable Fiber Connector, FC Adapter Included (SC, ST, LC, or SMA Adapters Can be Ordered Serperately)
Absolute and Relative Measurements Displayed in W, dBm, dB
NIST-Traceable Wavelength Calibration in 5 nm Steps
50 Hours of Operation Between Charges: