Fixed Optical Filters – OF

indie OF Series filters are made of state-of-the-art Fiber Bragg Gratings (FBGs) and backed by a 20+ years expertise, delivering unrivalled performance and cost effectiveness.

The FBG optical filters can be tailored to specific and stringent requirements on bandwidth, edge profiles, reflectivity, isolation, insertion loss, flatness and/or dispersion (or lack thereof). They are offered in different packaging options, including the best-in-class athermal package that compensates for thermal shift over a large operating range.

Whether it is for R&D purposes or integration into a commercial system, to either strongly suppress interferents or selectively collect critical signals, the OF Series filters will enable the best SNR and the cleanest signals, for the most challenging applications.

Key Features and Benefits

Narrow Bandwidth:
The OF Series provide reflection bandwidths as narrow as 2 GHz.

Central Wavelength Accuracy:
The OF is centered with ﹤50 pm accuracy.

Thermal Stability:
The OF athermal packaging option compensates the thermal shift of the FBG more than ten-fold. With SM fiber at 1550 nm, that’s ﹤0.7 pm/°C compared to 10 pm/°C without any packaging.

High Optical Isolation:
The OF mean out-of-band isolation typically reaches > 35 dB.

Flat-Top Steep-Edge:
The typical OF profile has a flat-top and edges steeper than 5dB/GHz for precision wavelength filtering.

Design Flexibility:
The OF can be centered between 700 and 2100 nm, with single or multi-band profiles tailored to your exact requirements.