I purchased a Huawei MA5616 equipment configured CCUE control board with 2*GE ports, is there any SFP ONT can be inserted into GE port to realise GPON function?

 

Yes, MA5671A can carry this function, but the price is very high and not available in the market, if you want to use GPON, you can configure Huawei CCUB with GP1A (1*GE+1*GPON) subcard.