Optical communication module

An optical communication module comprising:

• a module casing which comprises:
• an optical device for emitting a modulated light used for an optical communication;
• a signal input terminal supplied with an input signal from an outside;
• and
• an amplifier for amplifying said input signal supplied from said signal input terminal and supplying said amplified input signal to said optical device,
• wherein said signal input terminal, said amplifier and said optical device are arranged substantially along a straight line in this order, and said signal input terminal and said amplifier are electrically connected with each other by a signal line of a co-planar structure,
• wherein a metallic block provided with a Peltier cooler thereon is situated in said module casing, and
• wherein said optical device, a lens for outputting said light emitted from said optical device to said outside, a monitor for monitoring said light emitted from said optical device and controlling its light intensity, and a thermistor for detecting a temperature of said metallic block and controlling it by said Peltier cooler are mounted on said metallic block, and
• wherein said optical device is optically coupled with an optical output port formed on a part of said module casing via said lens.

An optical communication module inside a module casing comprising:

• a metallic block;
• an optical device mounted on said metallic block for emitting a modulated light used for an optical communication;
• a signal input terminal supplied with an input signal from an outside;
• and
• an amplifier for amplifying said input signal supplied from said signal input terminal and supplying said amplified input signal to said optical device,
• wherein said signal input terminal, said amplifier and said optical device are arranged substantially along a straight line in this order, and
• wherein said signal input terminal and said amplifier are electrically connected with each other by a single signal line of a co-planar structure positioned alone said straight line arrangement of said signal input terminal, said amplifier, and said optical device.