Optical Wavelength Meters

32 Optical Wavelength Meters from 10 manufacturers listed on GoPhotonics

An Optical Wavelength Meter is a scientific instrument used to measure the wavelength of light. Optical Wavelength Meters from the leading manufacturers are listed below. Use the filters to narrow down on products based on your requirement. Download datasheets and request quotes for products that you find interesting. Your inquiry will be directed to the manufacturer and their distributors in your region.

Description: Visible/NIR/NIR2 Laser Wavelength Meters for Laboratory Applications
Operation Mode:
CW Lasers, Pulsed Lasers
Wavelength Range:
375 nm to 2.5 µm
Wavelength Display Unit:
µm, nm, cm-1, GHz, THz
Fiber Mode:
Multi-Mode, Single Mode
Interface:
USB, Ethernet, RS-422
Wavelength accuracy:
up to ± 0.0001 nm
Measurement Range:
1 kHz
Connector:
FC/PC
Wavelength Display Resolution:
9 Digits, 8 Digits
Wavelength Repeatability:
0.0075 ppm (871A), 0.0125 ppm (871B)
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Description: 380 nm - 1095 nm, Laser Wavelength Meter for Pulsed/CW Lasers
Operation Mode:
CW Lasers, Pulsed Lasers
Wavelength Range:
380 to 1095 nm
Wavelength Display Unit:
nm, MHz
Interface:
RS-232, GPIB
Wavelength accuracy:
0.005 nm
Wavelength Display Resolution:
0.001 nm
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Description: High performance and cost-effective Optical Wavelength Meter
Operation Mode:
CW Lasers
Wavelength Range:
1270 to 1650 nm
Wavelength Display Unit:
nm
Fiber Mode:
Single Mode
Interface:
GP-IB, Gigabit Ethernet, USB, VGA output
Wavelength accuracy:
±0.2 ppm (±0.3 pm at 1550 nm)
Connector:
FC/PC or SC/PC
Wavelength Display Resolution:
0.0001 nm
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Description: VIS/UV/IR Wavelength Meter from 192 nm to 2250 nm
Operation Mode:
CW Lasers, Pulsed Lasers
Wavelength Range:
192 to 2250 nm
Wavelength Display Unit:
nm, MHz
Fiber Mode:
Multi-Mode
Interface:
USB 2.0
Wavelength accuracy:
0.3 pm, 0.6 pm, 400 MHz, 600 MHz
Wavelength Display Resolution:
Meaasurement Resolution: 100 MHz
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Description: Optical Wavemeter, 700 - 1650,m, ± 1 ppm
Operation Mode:
CW Lasers
Wavelength Range:
700 to 1650 nm
Wavelength Display Unit:
nm, cm-1, GHz
Interface:
RS-232, USB 2.0
Wavelength accuracy:
± 1 ppm (± 1.5 pm @ 1550 nm, ± 0.78 pm @ 780 nm)
Measurement Range:
20 Hz
Connector:
FC/APC
Sensitivity:
-20 dBm (10 mW)
Wavelength Display Resolution:
0.001 nm
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Description: Multi-Wavelength Meter from 700 nm to 1700 nm
Operation Mode:
CW Lasers
Wavelength Range:
700 to 1700 nm
Wavelength Display Unit:
nm, cm-1, THz
Fiber Mode:
Single Mode
Interface:
GPIB, USB, AC
Wavelength accuracy:
± 1.5 ppm typ. ± 2.1 pm (within 15 °C to 35 °C)
Fiber Core Diameter:
9/125 µm
Sensitivity:
-40 to -20 dBm
Wavelength Display Resolution:
0.0001 nm
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Description: 1530 nm - 1625 nm, Optical Wavelength Meter for Fiber-Optic Sensing Applications
Operation Mode:
CW Lasers
Wavelength Range:
C Band(1530 to 1565 nm), L Band(1565 to 1625 nm)
Wavelength Display Unit:
nm, MHz
Interface:
RS232, USB
Wavelength accuracy:
± 2.5 GHz
Wavelength Display Resolution:
0.3 nm
Wavelength Repeatability:
± 0.5 GHz
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Description: LW-10 provides a very robust calibration with 20 MHz resolution and 200 MHz absolute accuracy within a very compact package
Operation Mode:
CW Lasers, Pulsed Lasers
Wavelength Range:
700 to 1000 nm
Wavelength Display Unit:
nm, cm-1, THz
Fiber Mode:
Single Mode
Interface:
Gigabit Ethernet
Wavelength accuracy:
200 MHz
Connector:
FC/APC
Wavelength Display Resolution:
20 MHz
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Description: Mini Optical Power Meters and Light Source
Operation Mode:
CW Lasers
Wavelength Range:
1310 to 1550 nm ±10 to ±20 nm
Wavelength Display Unit:
nm
Fiber Mode:
Single Mode, Multi-Mode
Wavelength accuracy:
±10 to ±20 nm
Measurement Range:
dBm
Connector:
FC/PC (Default ) FC/APC, SC/PC, SC/APC
Fiber Core Diameter:
50/125µm, 62 5/125µm
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Description: USB Powered, highly accurate & very Compact Size Wavemeter
Operation Mode:
CW Lasers
Wavelength Range:
450 to 950 nm
Wavelength Display Unit:
nm
Interface:
USB
Wavelength accuracy:
± 100 pm(factory calibration), ± 20 pm(user calibr...
Wavelength Display Resolution:
2 pm@700 nm
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1 - 10 of 32 Optical Wavelength Meters

What are Optical Wavelength Meters?

The optical wavelength meter, also known as an optical wavemeter, is a device used for the accurate measurement of wavelength. It has an interferometer-based approach where the two beams derived from the incident light are recombined to form a fringe pattern. Analyzing this pattern along with the pattern formed by a reference beam allows precise determination of the wavelength. It can measure the wavelength of both pulsed and continuous-wave optical signals. Precise determination of wavelength is very important for optical communication, spectroscopy, sensing, and metrology applications.

There are two types of wavemeters, i.e., scanning wavemeters and static wavemeters with no moving parts.


The scanning wavemeters work based on the Michelson interferometer setup. The system has a fixed length arm with a fixed mirror and a variable arm whose length can be varied smoothly using the movable scanning mirror. A beamsplitter is used to split the incident beam between the fixed arm and the variable arm. Both beams after reflection from the respective mirrors recombine at the beamsplitter to produce an interference pattern at the detector.

The wavemeter calculates wavelength using the equation: mλ = 2d, where m is the number of fringes in the interference pattern, and d is the displacement of the scanning mirror. Here, the displacement, d is an unknown value. To accurately measure it, a reference beam, whose wavelength is known, is introduced into the setup. The fringe pattern produced by the reference beam is analyzed to calculate the displacement, d of the scanning mirror. This value is then used to determine the wavelength of the incident beam using the above equation.


A static wavemeter has a Fizeau interferometer with two reflective plane surfaces at slight angles of a few arcsec forming a wedge. The incident laser beam illuminates the system and produces a parallel fringe pattern. The minima in the fringe pattern corresponds to the point where the integer multiple of the incident wavelength equals to the round-trip path between the reflective surfaces. This integer number denotes the order of the interference and hence the spacing between the fringe minima, i.e., its period, depends on the incident wavelength. So, by observing the fringe pattern, the incident wavelength can be calculated.

The wavemeter captures the fringe pattern using a photodiode array and analyzes it to determine the fringe period; thereby computing the wavelength of the incident beam. Fizeau interferometer-based wavemeters have better wavelength accuracy compared to scanning interferometers as the former have no moving parts.

Dense Wavelength Division Multiplexing (DWDM) systems

Stabilizing the operating wavelengths is very important for the proper working of DWDM systems. Wavemeters are used for accurate wavelength analysis and calibration of active DWDM components like transmitters or optical sources such as DFB lasers, tunable lasers, and VCSELs. It is also used for its optical performance monitoring and for optical spectrum analysis of other passive DWDM components.

Wavemeters in optical Systems

Optical wavelength meters are used for the characterization, calibration, and inspection of various optical systems like optical sensors, tunable lasers, laser diodes, and optical transceivers. Using wavemeters along with tunable lasers can detect and avoid undesired wavelength tuning or fluctuations.

For Sensing Applications

Optical wavemeters can be embedded into the fiber as in-line fiber optic wavemeters which helps in sensing or monitoring applications. They can be used for pressure, temperature, and strain sensing.

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