Patent ID: 7559703
Filing Date: 2009-07-14
Classification: G02B,H01L,H04B

Abstract:
1. An optical module comprising: a fiber array including plural optical fibers which are divided to at least a transmitter fiber group and a receiver fiber group; a laser diode array including plural laser diodes which are grouped in at least a transmitter laser diode group; a photodiode array including plural photodiodes which are divided to at least a monitor photodiode group and a receiver photodiode group, the laser diode array being provided between the fiber array and the photodiode array, and the plural optical fibers of the transmitter fiber group being optically aligned with the plural laser diodes of the transmitter laser diode group, respectively; a micro-lens array provided between the laser diode array and the photodiode array, and configured to optically align the plural laser diodes of the transmitter laser diode group and the plural optical fibers of the receiver group with the plural photodiodes of the monitor photodiode group and the plural photodiodes of the receiver photodiode group, respectively; and electrical circuits on which the photodiode array is provided, wherein the electrical circuits have a first surface and include a receiver circuit and plural photodiode lead wires, the photodiode array and the receiver circuit are provided only on the first surface of the electrical circuits, and the plural photodiode lead wires electrically connect the photodiode array to the receiver circuit, and wherein the receiver circuit is at least partially sandwiched between the micro-lens array and the electrical circuits.