Marvell Technology, Inc. (NASDAQ: MRVL) and Lumentum (NASDAQ: LITE) today announced that they have entered into a definitive agreement for Marvell to acquire Lumentum in an all-stock transaction. Under the terms of the agreement, Lumentum stockholders will receive a fixed exchange ratio of 4.500 shares of Marvell common stock for each share of Lumentum common…