Performance analysis of a micro-scale pulse tube cryocooler based on optical fiber regenerator

► Holey optical fiber is introduced to pulse tube cryocooler (PTC) as the regenerator. ► The regenerator performance is simulated and analyzed with a model based on thermoacoustics. ► The simulation shows a micro-scale PTC with optical fiber can achieve a COP as large as 0.136 at 80 K.