Why is there a single high frequeny noise component in the output of an op-amp filter?
The "Dual Decompensated" in the IC's title is biting you.

Two things come to mind.  The description in the data sheet mentions that that IC is stable in gains of 10 and more, and you are low gain.

Also

From the data sheet:
High Speed Operation
When the feedback around the op amp is resistive (RF), a
pole will be created with RF, the source resistance and
capacitance (RS, CS), and the amplifier input capacitance
(CIN ≈ 2pF). In low closed loop gain configurations and
with RS and RF in the kilohm range, this pole can create
excess phase shift and even oscillation. A small capacitor
(CF) in parallel with RF eliminates this problem. With
RS (CS + CIN) = RFCF, the effect of the feedback pole is
completely removed.

Even though you have no resistor in your feedback path, maybe R2 is working its way in somehow.  You might try a small cap in parallel with R2, but be careful of your frequency response.  You could also try a different configuration filter.