Transistor outline header for high-speed data transmission of optoelectronic applications

Patent metadata

Field	Value
Publication number	US-12381370-B2
Application number	US-202117461666-A
Country	US
Kind code	B2
Filing date	Aug 30, 2021
Priority date	Sep 3, 2020
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A header for opto-electronic applications is provided. The header includes a header base with a back face, a front face, and opening that extends from the back face through the base to the front face. The opening accommodates an electrically isolated pin through the opening. A pedestal is arranged at the front face and is below a center of the opening. The pedestal has a mounting face and a free face, which opposes the mounting face. The pedestal further includes an upper surface for mounting and carrying a pedestal submount. The mounting face is fixedly attached to the front face with an electrically conductive material that is at least partially arranged between the front face and the mounting face. An electrically isolating material is arranged in the opening between the base and the pin to electrically isolate the pin from the base.

First claim

What is claimed is:

1. A header for optoelectronic applications, comprising:
a header base extending in a height direction, a width direction, and a longitudinal direction, the header base having a base back face, a base front face, and at least two openings that extend from the base back face through the header base along the width direction to the base front face;
a pin fixed in each of the openings so that the pin is electrically isolated from the header base;
a first pedestal and a second pedestal arranged at the base front face, the first and the second pedestal being arranged mirror symmetrically with respect to an imaginary plane parallel to the height direction and the width direction, the first pedestal and the second pedestal being below, in the height direction, a center of one of the openings, the first pedestal and the second pedestal each comprising a pedestal mounting face, a pedestal free face that is opposite the pedestal mounting face, and an upper surface, the upper surface being sized and configured for mounting and carrying a pedestal submount, wherein the pedestal upper surface faces the respective pin,
wherein the pedestal mounting faces are fixedly attached to the base front face with an electrically conductive material that is at least partially arranged between the base front face and the pedestal mounting faces,
wherein each pedestal comprises a bar arranged on the upper surface thereof and directed perpendicular to the longitudinal and height direction and the bar extending along one of the side faces of the pedestal to form a sidewall adjacent to the upper surface, wherein a L-shape of each of the first and second pedestal is formed by the first bar and the upper surface of the pedestal.

2. The header of claim 1 , wherein the upper surface of the first pedestal is connected to the pedestal free face and/or the pedestal mounting face by an edge, wherein the edge is adjacent to and between the upper surface and the pedestal mounting face and/or the pedestal free face.

3. The header of claim 2 , wherein the edge is a chamfer edge or a blend edge.

4. The header of claim 1 , further comprising a second pedestal, a first bar, and a second bar, wherein the first bar is arranged such that a side face of the first bar extends a first side face of the first and second pedestals, wherein the second bar is arranged such that a side face of the second bar extends a second side face of the first and second pedestals to form two sidewalls adjacent to the upper surface and such that the first and second bars and the upper surface of the first and second pedestals form a U-shape, respectively.

5. The header of claim 1 , further comprising a second pedestal, a first bar, and a second bar, wherein the first bar is arranged such that a side face of the first bar extends a first side face of the first and second pedestals, wherein the second bar is arranged such that a side face of the second bar extends a second side face of the first and second pedestals to form two sidewalls adjacent to the upper surface, wherein one of the first and second bars has a lower length than the other of the first and second bars to form a partial U-shape of the first and second pedestals, wherein the upper surface is positioned between the first and second bars.

6. The header of claim 1 , further comprising two pedestal submounts mounted on the upper surface of the first and second pedestals, wherein the first and second pedestals each have a sidewall with a height in the height direction that corresponds to a height of the two pedestal submounts.

7. The header of claim 6 , wherein the first and second pedestals each have a pair of side sidewalls.

8. The header of claim 6 , wherein the first and second pedestals have a length in the longitudinal direction that is larger than a length of the two pedestal submounts.

9. The header of claim 6 , wherein the height of the sidewall is larger than 0.1 mm and smaller than 0.6 mm.

10. The header of claim 5 , wherein the first and/or second bar has a width in the width direction that is larger than 0.05 mm and smaller than 0.3 mm.

11. The header of claim 5 , wherein at least one of the first and second pedestal submounts comprises a conductor trace electrically connected to at least one of the first and second bars, wherein the conductor trace is part of a coplanar waveguide.

12. The header of claim 1 , further comprising:
a second opening that extends from the base back face through the header base along the width direction to the base front face;
a second pin fixed in the second opening so that the second pin is electrically isolated from the header base; and
a second pedestal arranged at the base front face, the second pedestal being below, in the height direction, a center of the second opening.

13. The header of claim 12 , wherein the pin and/or the second pin comprise a feature selected from a group consisting of: a head face arranged flat with the front face and a head shaped as a nail head.

14. A header for optoelectronic applications, comprising:
a header base extending in a height direction, a width direction, and a longitudinal direction, the header base having a base back face, a base front face, and an opening that extends from the base back face through the header base along the width direction to the base front face;
a pin fixed in the opening so that the pin is electrically isolated from the header base;
a first pedestal arranged at the base front face, the first pedestal being below, in the height direction, a center of the opening, the first pedestal comprises a pedestal mounting face, a pedestal free face that is opposite the pedestal mounting face, and an upper surface, the upper surface being sized and configured for mounting and carrying a pedestal submount, wherein the pedestal mounting face is fixedly attached to the base front face with an electrically conductive material that is at least partially arranged between the base front face and the pedestal mounting face; and
a second pedestal, a first bar, and a second bar, wherein the first bar is arranged such that a side face of the first bar extends a first side face of the first and second pedestals, wherein the second bar is arranged such that a side face of the second bar extends a second side face of the first and second pedestals to form two sidewalls adjacent to the upper surface and such that the first and second bars and the upper surface of the first and second pedestals form a U-shape, respectively.

15. A header for optoelectronic applications, comprising:
a header base extending in a height direction, a width direction, and a longitudinal direction, the header base having a base back face, a base front face, and an opening that extends from the base back face through the header base along the width direction to the base front face;
a pin fixed in the opening so that the pin is electrically isolated from the header base;
a first pedestal arranged at the base front face, the first pedestal being below, in the height direction, a center of the opening, the first pedestal comprises a pedestal mounting face, a pedestal free face that is opposite the pedestal mounting face, and an upper surface, the upper surface being sized and configured for mounting and carrying a pedestal submount, wherein the pedestal mounting face is fixedly attached to the base front face with an electrically conductive material that is at least partially arranged between the base front face and the pedestal mounting face; and
a second pedestal, a first bar, and a second bar, wherein the first bar is arranged such that a side face of

Assignees

• Schott Ag

Inventors

• Wai Li Ong
• Tan Jian Dean
• Ping Amy Soon Li
• Krause Andreas
• Aowudomsuk Artit
• Droegemueller Karsten

Classifications

• H10W76/60

  Seals · CPC title

• H10W76/12 Primary

  characterised by their shape · CPC title

• H01S5/0683

  by monitoring the optical output parameters · CPC title

• H01S5/02415

  by using a thermo-electric cooler [TEC], e.g. Peltier element · CPC title

• H01S5/02212

  Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis · CPC title