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According to Reuters, the currency "rose broadly" ahead of a policy decision later this week.
Other central banks have already announced that they will be pursuing unconventional methods of monetary policy, with the Bank of England planning to buy gilts.
And traders are now awaiting the Fed's next move, with the news source noting that buying longer-dated Treasuries could be an option to keep interest rates down.
It comes after the G20 meeting of finance ministers failed to give much of a trading incentive, with chief economist at Shinko Securities Hideki Hayashi remarking: "The G20 meeting has had little impact on the Forex market."
Meanwhile, US president Barack Obama has expressed optimism about the long-term prospects for the country's economy, telling business leaders that the crisis is "not as bad as we think".
