Multimode Fiber Attenuator Companies

Top manufacturers for multimode fiber optic attenuators include FS, Fibertronics, Thorlabs, and DigiKey, offering both fixed and variable solutions for 50/125 µm and 62.5/125 µm fibers.

Leading Manufacturers and Suppliers

FS (Fiberstore) offers a wide range of fixed and variable fiber optic attenuators with stable attenuation from 0 to 60 dB, suitable for WDM transmission and multimode fiber applications . Their products are known for consistent performance and compatibility with various connector types.

Fibertronics, Inc. provides an extensive selection of multimode attenuators for 50/125 µm and 62.5/125 µm fibers. They offer male-to-female buildout pads, in-line attenuators, and adjustable air-gap attenuators with connectors including LC, SC, FC, and ST. Custom lengths and connector types are available to match specific system requirements .

Thorlabs specializes in variable multimode fiber optic attenuators (VOAs), which allow precise adjustment of optical power by controlling the air gap between connectors. Their products support FC/PC and SMA connectors and are ideal for lab instrumentation, optical spectrum analyzers, and detector protection .

DigiKey serves as a distributor for multiple manufacturers, offering a large in-stock selection of multimode fiber optic attenuators with various connector types (D4/PC, FC, SC, ST, MU) and fixed or dual-window attenuation options. This makes it convenient for rapid procurement and same-day shipping .

Selection Considerations

When choosing a multimode fiber attenuator, consider:

• Fiber type and core size: 50/125 µm or 62.5/125 µm
• Connector compatibility: LC, SC, FC, ST, SMA, etc.
• Attenuation type: fixed vs variable (air-gap or in-line)
• Application: lab testing, WDM power balancing, or receiver protection
• Customization needs: length, connector type, or specific insertion loss

These manufacturers and distributors provide reliable options for both commercial and laboratory applications, ensuring compatibility with multimode fiber systems and precise optical power control.