Advantages of Multiple Band Pass Filters in Telecommunications Applications
In wavelength-division multiplexer (WDM) and passive optical network (PON) modular design, single band pass filters and multiple band pass filters are used for the same purpose: permitting narrow wavelength ranges to pass through while rejecting wavelengths outside that range (known as the filter’s upper and lower cutoff frequencies).
Multiple band pass filters are used to transmit two or more standard coarse wavelength division multiplexing (CWDM) channels, separating them from the other CWDM bands — replacing two or more single band pass filters with a single component.
An article by two employees of Iridian Spectral Technologies details the advantages of using multi-band filters in place of two or more single band filters, examining WDM module performance, reliability, cost, and dimension concerns in design and production. This article also establishes Iridian’s unique expertise as both a progenitor of multi-band filter technology and a present-day leader in multi-band filters’ telecommunications applications.
To read this article, click here.
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