Laser module and optical subassembly
First Claim
Patent Images
1. A structure comprising:
- an alignment plate comprising;
a template plate comprising a laser diode aperture and a photodiode aperture;
a weld plate coupled to said template plate; and
a reflector coupled to said template plate.
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Abstract
A laser module includes an alignment plate having a template plate having a laser diode aperture and a photodiode aperture. A weld plate and a reflector are coupled to the template plate. The structure further includes a heat sink coupled to the alignment plate. A photodiode subassembly is mounted within the photodiode aperture and to the heat sink. Further, a laser diode subassembly is mounted within the laser diode aperture and to the heat sink. In the above manner, the photodiode subassembly, laser diode subassembly and reflected are precisely aligned.
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Citations
29 Claims
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1. A structure comprising:
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an alignment plate comprising;
a template plate comprising a laser diode aperture and a photodiode aperture;
a weld plate coupled to said template plate; and
a reflector coupled to said template plate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A structure comprising:
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a heat sink comprising;
a template plate; and
a weld plate coupled to said template plate, a photodiode subassembly coupled to said template plate, said photodiode subassembly comprising a photodiode substrate comprising a pair of spaced apart parallel fingers defining a slot; and
a laser diode subassembly coupled to said template plate and located within said slot. - View Dependent Claims (9, 10)
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11. A structure comprising:
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a template plate coupled to a weld plate, said template plate comprising;
a main body;
a pair of spaced apart parallel fingers extending from said main body; and
a laser mounting surface contiguous with an inner side of said main body and inner sides of said pair of spaced apart parallel fingers, said inner side of said main body comprising a reflective surface. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
raised surfaces; and
stops surfaces perpendicular to and extending between said upper surface of said main body and said raised surfaces of said stops.
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14. The structure of claim 13 further comprising tabs projecting upwards from said upper surface of said main body.
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15. The structure of claim 14 wherein said tabs in combination with said stops define a pocket.
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16. The structure of claim 15 further comprising a photodiode subassembly coupled to said template plate within said pocket.
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17. The structure of claim 16 wherein said photodiode subassembly comprises:
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a photodiode substrate; and
a photodiode flip chip mounted to said photodiode substrate.
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18. The structure of claim 17 wherein said photodiode substrate comprises a lower surface coupled to said upper surface of said main body.
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19. The structure of claim 17 wherein said photodiode substrate comprises a photodiode aperture directly below and aligned with an active area of said photodiode.
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20. The structure of claim 19 wherein said reflective surface is directly below and aligned with said photodiode aperture.
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21. The structure of claim 11 wherein said inner side of said main body and said inner sides of said pair of spaced apart parallel fingers define a trench, said structure further comprising a laser diode subassembly coupled to said laser mounting surface and located within said trench.
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22. A structure comprising:
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a template plate coupled to a weld plate, said template plate comprising;
a main body;
a pair of spaced apart parallel fingers extending from said main body; and
a laser mounting surface contiguous with an inner side of said main body and inner sides of said pair of spaced apart parallel fingers;
a photodiode subassembly coupled to said template plate, said photodiode subassembly comprising;
a photodiode substrate; and
a photodiode flip chip mounted to said photodiode substrate, said photodiode substrate comprising a photodiode aperture directly below and aligned with an active area of said photodiode; and
a reflector coupled to said laser mounting surface, said reflector being located directly below and aligned with said photodiode aperture.
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23. A structure comprising:
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an alignment plate comprising;
a template plate comprising a laser diode aperture and a photodiode aperture;
a weld plate coupled to said template plate; and
a reflector coupled to said template plate;
a photodiode subassembly mounted within said photodiode aperture; and
a laser diode subassembly mounted within said laser diode aperture. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A structure comprising:
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a template plate comprising;
a main body;
a pair of spaced apart parallel fingers extending from said main body; and
a laser mounting surface contiguous with an inner side of said main body and inner sides of said pair of spaced apart parallel fingers;
a photodiode subassembly coupled to said template plate, said photodiode subassembly comprising a photodiode;
a reflector coupled to said laser mounting surface, said reflector being located directly below and aligned with said photodiode; and
a laser diode subassembly located within a slot defined by said inner side of said main body and said inner sides of said pair of spaced apart parallel fingers.
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Specification