The youngster has enjoyed has outstanding spell so far with the Glovers.
Caulker, speaking to Yeovil's official matchday magazine The Glovers, said: "I've really enjoyed it. I'm just loving getting games under my belt - that's the most important thing really."
He is at Huish Park alongside fellow Spurs youngsters Ryan Mason and Jon Obika for the rest of the 2009-10 season.
And he added: "It's been good for all of us young lads and hopefully it's been good for the team as well.
"We know we're here for the whole season now and that's good as it gives you a bit of reassurance because it's nice to know where you're playing on a weekly basis."