LIGHT EMITTING MODULE AND MULTI-CHANNEL LIGHT EMITTING MODULE

摘要

The present transmitter optical module provides an LD 11, a first lens 12 with a focal point aligned with an optical output point of the LD 11, a second lens 14 that generates an optical output of the first lens 12 as a concentrated optical signal, and a third lens 4 that provides an optical output of the second lens 14 in an optical fiber 5. The second lens 14 is set at a position offset toward the third lens 4 from a position at which the second lens 14 outputs a collimated optical signal. The third lens 4 concentrates an optical output thereof within the optical fiber 5.