Optical module and optical communication device

An optical module comprising:

• a first optical IC and a second optical IC configured to perform photoelectric conversion;
• a first power supply IC configured to supply power to the first optical IC and the second optical IC;
• and
• a module substrate on which the first optical IC, the second optical IC, and the first power supply IC are positioned,
• wherein the module substrate includes a first wiring line that connects the first power supply IC to the first optical IC, and
• a second wiring line that connects the first power supply IC to the second optical IC,
• when a resistance value of the first wiring line is R1, a resistance value of the second wiring line is R2, a length of a shortest path from the first power supply IC to the first optical IC within the first wiring line is L1, and a length of a shortest path from the first power supply IC to the second optical IC within the second wiring line is L2,
• L2 is longer than L1, and
• |R2−R1| is smaller than (L2−L1)/L1×R1.