TOKYO, March 15 (Reuters) - Japan's 10-year government bond yields touched a one-month high on Tuesday, tracking U.S. Treasury peers higher on increased optimism ahead of an expected rate hike by the Federal Reserve. The 10-year JGB yields JP10YTN=JBTC were traded 1.5 basis points higher at 0.205%, after touching 0.210%, their highest since Feb. 18. U.S. Treasury yields jumped to 2-1/2-year highs overnight, in the run-up to what is expected to be the U.S. central bank's first rate hike in three years in a quest to tame soaring inflation.