Patent ID: 6061493
Filing Date: 2000-05-09
Classification: G02B

Abstract:
A Transmitting Optical Subassembly (TOSA) for coupling an optical signal from an optical transmitter to an optical fiber, the TOSA comprising:a housing having a first end defining an optics cavity configured to receive an optical element for emitting said optical output signal, the optical element being driven by said optical transmitter, and a second end defining a receiving bore configured to receive said optical fiber;the housing further defining a lens cavity disposed between the optics cavity and the receiving bore;a focusing element disposed within the lens cavity;the housing further defining an attenuator-receiving aperture between the optics cavity and the receiving bore;an optically lossy attenuator plug removably insertable into the attenuator-receiving aperture whereby said optical output signal passes through the plug and is attenuated wherein said attenuator-receiving aperture includes a retention feature for retaining the attenuator plug therein.