Fiber Laser Mode Field Adapter Selection
Mode-field adapter configurations depend on the input/output fibers, signal wavelength, loss requirement and package.
Selection logic
Input & output fiber interfaces
The MFA data lists standard SMA-to-LMA fiber combinations such as 6/125→10/125 and 10/125→20/400.
Signal wavelength
Standard signal ranges are 1030–1080 nm or 1450–1600 nm.
Forward & backward loss
The insertion-loss values depend on the selected fiber pair.
Package & mounting configuration
Available configurations use the D1–D7 package family or a custom package.
Quick comparison
| Need | Recommended direction |
|---|---|
| Mode-field transition between dissimilar fibers | Mode Field Adapter (MFA) |
Frequently asked questions
Which interfaces define a mode field adapter request?
Identify the input and output fiber types and dimensions. The selected fiber pair determines the configuration to review.
How is the signal wavelength selected?
Use the operating wavelength and range listed for the selected product configuration. A family label does not establish performance at every wavelength.
How should insertion loss be compared?
Compare the stated forward and backward loss for the selected fiber pair and test conditions. These values should not be transferred to a different interface.
When are package requirements confirmed?
The package, pigtails and mounting constraints are confirmed with engineering for the selected optical configuration.