Sammon only moved to the DW in January from Kilmarnock.
The Republic of Ireland Under-21 made his debut from the bench in the 1-0 defeat by Manchester City on Saturday but almost grabbed an equaliser in stoppage time.
"It's definitely possible to stay up," he told the club's official website. "We've got a confident bunch of lads here at the club and we take it one game at a time.
"I'm very confident I can help the team and provide some goals, and if I can do that I'll be delighted. I'm also very focused on the job in hand and I am eager to help the team progress up the league table.
"When you get an opportunity off the bench it's a great chance to show what you can do and stake a claim for a permanent place, and I'm looking forward to the next game when I can hopefully I keep pushing.
"We definitely have enough quality and fight in this side and I believe we can prove that by turning our good performances into positive results."