Since USDT also use Bitcoin network , i am wondering if this is possible. If it is possible , is it a same lighting network or a totally different with bitcoin lighting network.
You'd need omnicore (the backbone supporting USDT) to support LN internally for this to work, because the way omni tokens are identified as BTC UTXO's is not trivial. This would also need LN operators to run omnicore as well as bitcoin core.