Optical multiplexer and transmitter optical subassembly
AssigneeHuawei Technologies Co., Ltd.
InventorsXueming Zhang, Zhengwen Wan
Life of this patent
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Abstract
An optical multiplexer and a transmitter optical subassembly are provided that relate to the field of optics communications. A light-combining part is formed by using at least one light combiner that can combine two beams of light into one beam of light, and at least two levels of light-combining parts are used to constitute an optical multiplexer, so that 2N beams of light are combined into one beam by using N level of light-combining parts, thereby reducing a package size and packaging loss, and reducing the complexity of a manufacturing process.
Claims19
An optical multiplexer, comprising:
- at least two levels of light-combining parts, wherein each level of light-combining parts comprises light combiners whose number is half the number of beams of input light of the each level, wherein each light combiner is configured to combine two beams of light into one beam, and wherein the optical multiplexer comprises at least two different types of light combiners;
- collimation lenses, wherein a number of the collimation lenses is the same as a number of light sources, and wherein each of the collimation lenses is disposed between a light source and a first level of light-combining parts;
- and
- a focusing lens disposed behind a light outlet of a last level of light-combining parts.
A transmitter optical subassembly, comprising:
- an optical multiplexer, wherein the optical multiplexer comprises:
- at least two levels of light-combining parts, wherein each level of light-combining parts comprises light combiners whose number is half the number of beams of input light of the each level, wherein each light combiner is configured to combine two beams of light into one beam, and wherein the optical multiplexer comprises at least two different types of light combiners;
- collimation lenses, wherein a number of the collimation lenses is the same as the number of light sources, each of the collimation lenses being disposed between a light source and a first level of light-combining parts;
- a focusing lens disposed behind a light outlet of a last level of light-combining parts;
- a laser chip that is used as a light source, wherein the laser chip is connected to an input end of the optical multiplexer;
- and
- a ceramic ferrule that is used for coupling output, wherein the ceramic ferrule is connected to an output end of the optical multiplexer.
Dependencies are inferred from the claim text.