Patent ID: 9350454
Filing Date: 2016-05-24
CPC Classification: G02B,H01S,H04B

Claim Text:
1. A multi-laser transmitter optical subassembly (TOSA) comprising: first, second, third, and fourth lasers configured to generate first, second, third, and fourth optical signals having first, second, third, and fourth wavelengths, respectively; a mirror; first, second, and third filters having first, second, and third filter surfaces facing the mirror; first, second, third, and fourth collimating lenses having first, second, third, and fourth axes, respectively, two or more of the axes not being parallel to each other, the first, second, third, and fourth collimating lenses each individually adjusted and aligned to collimate and transmit the first, second, third, and fourth optical signals, respectively; and a focusing lens, wherein the first collimating lens is configured to align the first optical signal with the second optical signal passing through the first filter, the first filter is configured to combine the first and second optical signals, the second collimating lens is configured to align the second optical signal with the third optical signal passing through the second filter, the second filter is configured to combine the first, second, and third optical signals, the third collimating lens is configured to align the third optical signal with the fourth optical signal passing through the third filter, and the third filter is configured to both combine the first, second, third, and fourth optical signals and transmit the combined first, second, third, and fourth optical signals toward the focusing lens.