Bias tee with very small low cut-off frequency
A single capacitor is all you need.  The term for this is a "DC blocking capacitor".  You commonly see them in audio circuits but they are used elsewhere.

The value of the capacitor is dependent on the input impedance of whatever you are feeding after the blocking cap.  The lower the input impedance, the higher the value of cap that is required.  Also, the lower the frequency response you need, the higher the value of cap.

A cap of only 10 uF is good if the input impedance is fairly high (100's of K ohms).  But if the impedance is lower then you might need 68 uF or even 100 uF.  

Unfortunately there is often some amount of trial and error needed when selecting the proper capacitor value-- especially if you do not accurately know the input impedance.