Buying Variable Optical Attenuators
Variable optical attenuators (VOAs) are used in applications such as optical fiber communications to control signal strength. These devices come in bulk-optical (free-space) and fiber-optic versions, with varying polarization dependence, attenuation range and accuracy, operational wavelength range, and power handling capabilities.
Making Good Purchase Decisions
As the most professional photonics purchasing portal, RP Photonics helps you to not only to find all relevant suppliers (not limited to our advertisers), but also to make good purchasing decisions.
NEW: Structured Decision Process
Purchasing involves a lot of responsibility. We recommend that you apply best practice by using the following structured process: Go through the following expandable sections, complete the form and finally come to a purchase decision. You can then print that to a PDF for documenting the process.
Our article on best practices for purchasing and another one explaining this tool give you valuable insights.
Suppliers for Variable Optical Attenuators
39 suppliers for variable optical attenuators (VOA) are listed in the RP Photonics Buyer's Guide, out of which 5 present their product descriptions. Both manufacturers and distributors can be registered.
Suppliers with Advertising Package
presenting their product descriptions
![]() Test. Measure. Solve. Quantifi Photonics Limited12–14 Parkway Drive Auckland 0632 New Zealand See us at OFC 2025 in San Francisco, April 1–3 (booth 5523)! | ![]() Quantifi Photonics' offers a range of extremely compact, cost-effective variable optical attenuators designed for streamlined testing and characterization of optical communication systems and optical components. They provide fast attenuation speed with low insertion loss and built-in power monitoring, with fixed attenuation or constant output power modes and supports single-mode, multi-mode and polarization-maintaining fibres. Product-specific web page |
![]() Your reliable partner for photonics innovations! EKSMA Optics, UABDvarcioniu St. 2B LT-10233 Vilnius Lithuania See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth A2.107)! | ![]() EKSMA Optics has variable attenuators for high power Nd:YAG laser or femtosecond Ti:sapphire laser applications. Product-specific web page |
![]() Fraunhoferstr. 22 82152 Martinsried Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B2.203)! | ![]() AMS Technologies carries a broad range of variable fiber-optic attenuators (VOAs), for manual operation as well as driven by stepper motors, MEMS mirrors or shutters, or based on liquid crystals:
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![]() Rue François Mitterrand Institut d'Optique d'Aquitaine 33400 Talence France | ![]() AeroDIODE has developed the variable optical attenuator – a high-speed intensity modulator and optical switch based on a semiconductor optical amplifier (SOA). It is available over a wide wavelength range from 750 to 1650 nm. Key features are high speed (down to 1 ns rise/fall time), high dynamic range (>48 dB), high extinction ratio (>50 dB) and an easy to use graphical user interface with multiple software libraries (LabVIEW, Python etc.). AeroDIODE also offers the semiconductor optical amplifier alone or the SOA driver in either CW or pulsed configuration. AeroDIODE also offers a wide range of fiber coupled AOMs (Acousto Optic Modulators) with various types of digital (TTL) or analog RF drivers. See also our white paper/tutorial on fiber-coupled modulators. Product-specific web page |
![]() Home of high power optics and coatings LASEROPTIKHorster Str. 20 30826 Garbsen Germany See us at LASER World of Photonics 2025 in Munich, June 24–27 (booth B1.120)! | ![]() LASEROPTIK can provide coatings for variable optical attenuators. One can change the transmission by tilting an edge filter, with highest transmission at normal incidence and typical operation for angles of incidence between 0° and 45°. Product-specific web page |
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Other Suppliers
AC Photonics United States |
Advanced Fiber Resources Ltd. China |
AFW Technologies Pty Ltd. Australia |
Agiltron Inc. United States |
APEX Technologies France |
Evanescent Optics Inc. Canada |
HC Optical Science and Tech China |
HyOptic Technology Co., Ltd China |
IDIL Fibres Optiques France |
JGR Optics, Inc. Canada |
Lahat Technologies Ltd Israel |
LAS Photonics Israel |
LC-Tec Sweden |
Lightcomm Technology Co., Ltd. China |
Lightstar Technology China |
Maier Photonics, Inc. United States |
Mountain Photonics GmbH Germany |
Nano-Giga France |
OBS FIBER France |
OF-LINK Communications Co., Ltd. China |
Optiwave Photonics Limited India |
OZ Optics Canada |
Photonwares Co. United States |
Precision Fiber Optics Products United States |
Pure Photonics United States |
Reynard Corporation United States |
Ruik-tech Communication (Dongguan) Co., Ltd. China |
Santec Corporation Japan |
Sercalo Microtechnology Ltd. Switzerland |
Spectral Products United States |
Tokyo Instruments, Inc. Japan |
Wuhan Sunma Technology Co, Ltd. China |
Hangzhou Yong Hee Photonics Co., Ltd. China |
Zhongshan Hongxin Communication Technology Co., Ltd. China |