Patent ID: 7463830

Claim:
An optical transmitter for converting and coupling an information-containing electrical signal with an optical fiber comprising: a hermetically sealed housing including an electrical connector receiving an information-containing electrical communications signal, and a fiber optic connector adapted for coupling with an external optical fiber for transmitting an optical communications signal; a transmitter subassembly disposed in said housing and including first and second lasers operating at different wavelengths and modulated with respective first and second electrical signals for emitting first and second laser light beams; a optically transparent window in the housing; an optical multiplexer coupled to said housing and disposed outside the housing in the path of said first and second beams through the optically transparent window for multiplexing the respective optical signals into a single multi-wavelength beam that is coupled to said fiber optic connector for transmitting the optical signal to an external optical fiber; and a coupling subassembly that supports the optical multiplexer and that actively aligns the optical multiplexer with respect to the first and second laser beams during assembly of the transmitter subassembly.