Integrated Multi-Function Filters Help Telecom Module Engineers Do More With Less

By Yongbao Xin and Michelle Briere, Iridian Spectral Technologies

The immediate benefit of multi-function optical filters is saving space within telecom device modules. By minimizing the number of components and connections, multi-function filters can reduce insertion loss throughout a module, optimizing its performance. The use of multi-function filters also minimizes a device’s inherent operational risk and simplifies the module designer’s engineering process.

For existing devices, switching from a design that utilizes single-function filters to one that combines functions is likely to result in minor temperature differences and the need to tune the hybrid style filter for optimal performance. Importantly, Iridian Spectral Technologies can provide simulation data on each filter during the design phase, before a physical component even has been produced. Performance specifications including signal-to-noise (SR) ratios and angle of incidence (AOI) are part of the simulation, enabling customers to clearly understand how hybrid filters will perform within their packaging versus non-hybrid filters.