Flexible hermetic package for optical device

Patent metadata

Field	Value
Publication number	US-2016356972-A1
Application number	US-201615238774-A
Country	US
Kind code	A1
Filing date	Aug 17, 2016
Priority date	Jul 31, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

An opto-electronic package having two enclosures in which a first non-hermetic enclosure provides the structural rigidity required to maintain the alignment of the optical components for a predetermined environmental range, and second flexible enclosure that provides a hermetical seal for the opto-electronic package.

First claim

We claim:

1 . A package for an optical component comprising:
a flexible hermetic barrier membrane surrounding the optical component; at least one access port hermetically sealed in the flexible hermetic barrier membrane enabling at least one of optical and electrical coupling to the optical component; and a solid structural package surrounding the optical component; wherein the flexible hermetic barrier membrane conforms to the solid structural package, whereby the volume of the flexible hermetic barrier membrane does not change with variations in the external environmental air pressure.

2 . The package according to claim 1 , wherein the flexible hermetic barrier membrane has an internal pressure at least 10% different than the external environmental pressure.

3 . The package according to claim 1 , wherein the solid structural package is also hermetically sealed to the flexible hermetic barrier membrane around the access ports.

4 . The package according to claim 2 , wherein the solid structural package is inside the flexible hermetic barrier membrane.

5 . The package according to claim 4 , wherein pressure within the flexible hermetic barrier membrane is less than outside atmospheric pressure to ensure the flexible hermetic barrier membrane conforms to the solid structural package.

6 . The package according to claim 5 , wherein the pressure within the flexible hermetic barrier is between 10% and 50% less than outside atmospheric pressure.

7 . The package according to claim 4 , further comprising a coating on the flexible hermetic barrier membrane for increasing puncture resistance.

8 . The package according to claim 7 , wherein the coating is a polymer coating.

9 . The optical package according to claim 4 , wherein the solid structural package includes an opening for receiving one of the access ports; and wherein the opening comprises a first recess for receiving the access port, and a second smaller recess with a shoulder therebetween for abutting the access port.

10 . The optical package according to claim 2 , wherein the solid structural package is around the outside of the flexible hermetic barrier membrane.

11 . The optical package according to claim 10 , wherein pressure within the flexible hermetic barrier membrane is greater than outside atmospheric pressure to ensure the flexible hermetic barrier membrane conforms to the solid structural package.

12 . The optical package according to claim 10 , wherein the pressure within the flexible hermetic barrier is between 10% and 50% more than outside atmospheric pressure.

13 . The optical package according to claim 10 , further comprising adhesive between the solid structural package and the flexible hermetic barrier membrane.

14 . The optical package according to claim 1 , further comprising adhesive between the solid structural package and the flexible hermetic barrier membrane for conforming the flexible hermetic barrier to the solid structural package.

15 . The optical package according to claim 14 , wherein the adhesive covers at least 50% of the surface area of the flexible hermetic barrier membrane.

16 . The optical package according to claim 1 , wherein the solid structural package comprises a hardened coating on the flexible hermetic barrier membrane.

17 . A method of manufacturing an optical package comprising:
mounting an optical component within a flexible hermetic barrier with optical and electrical elements of the optical component aligned with hermetically sealed optical and electrical feedthroughs in the flexible hermetic barrier; covering the flexible hermetic barrier with a coating, which hardens into a solid structural package surrounding the flexible hermetic barrier.

18 . The method according to claim 17 , wherein the step of covering the flexible hermetic barrier comprises dipping the flexible hermetic barrier into the coating.

19 . A package for an optical component comprising:
a solid structural package surrounding the optical component with an opening extending therethrough; a feed through extending through the opening in the solid structural package, with an access port extending through the feed through enabling at least one of optical and electrical coupling to the optical component; and a flexible hermetic barrier membrane sheet surrounding the opening, the sheet having a first seal with the feed through around the access port, and a second seal with the solid structural package around the opening and the first seal; whereby the volume of the flexible hermetic barrier membrane does not change with variations in the external environmental air pressure.

Assignees

• Lumentum Operations Llc

Inventors

• Moffat Steven Harold
• Duricic Nenad
• Moore-Crispin Simon

Classifications

• G02B6/4236

  Fixing or mounting methods of the aligned elements · CPC title

• G02B6/4248

  Feed-through connections for the hermetical passage of fibres through a package wall (see provisionally also G02B6/4428) · CPC title

• G02B6/4292

  the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements · CPC title

• Y10T29/49002

  Electrical device making · CPC title

• G02B6/4293

  hybrid electrical and optical connections for transmitting electrical and optical signals · CPC title