A piece of furniture has a first piece attached to second and third pieces being perpendicular to the first piece and where two opposing edges of the first piece are attached to one of the second and third pieces each. The occluder may be responsive to a pressure differential within the infusion set or may respond to compression of the infusion set. The dielectric deposition may be by any suitable process, for example CVD, SOG, ALD, or catalyzed PDL. An innovative option to heat the etalon directly is disclosed to actively stabilize and maintain the etalon’s bandpass.