Integrated modulator/laser assembly and a method of producing same
AssigneeAvago Technologies Fiber IP (Singapore) Pte. Ltd.
InventorsClaudio Coriasso, Rui Yu Fang, Guido Roggero, Marzia Rosso, Simone Codato
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Abstract
An laser/modulator assembly includes a laser source, such as a distributed feedback (DFB) laser, and a modulator, such as an electro-absorption modulator (EAM), integrated along a common waveguide. The waveguide has a distal end bent to define an inner side of the bent waveguide. A low reflectivity facet is arranged at the distal end of the waveguide, and a mirror is arranged at the inner side of the distal end of the waveguide to prevent any back reflection into the EAM waveguide from said low reflectivity facet, and the lateral trenches typically associated therewith.
Claims11
An assembly comprising:
- a laser source integrated with a modulator along a common waveguide, said waveguide having a distal end being bent to define an inner side of said waveguide;
- a low reflectivity facet arranged at said distal end;
- and
- a mirror arranged adjacent to said inner side and separate from said waveguide to reflect light from said low reflectivity facet back toward said low reflectivity facet, and thus prevent back reflection into said waveguide from said low reflectivity facet.
A method of producing an assembly including a laser source integrated with a modulator, the method comprising:
- integrating said laser source with said modulator along a common waveguide, wherein said waveguide has a distal end being bent to define an inner side of said waveguide;
- arranging a low reflectivity facet at said distal end;
- and
- arranging a mirror adjacent to said inner side and separate from said waveguide to reflect light from said low reflectivity facet back toward said low reflectivity facet, and thus
- prevent back reflection into said waveguide from said low reflectivity facet.
Dependencies are inferred from the claim text.