Packaged microelectromechanical devices and systems

• US 6,188,814 B1
• Filed: 08/03/1999
• Issued: 02/13/2001
• Est. Priority Date: 08/03/1999
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Bhalla, Kulbir Singh
• Primary Examiner(s): Font, Frank G.
• Assistant Examiner(s): Nguyen, Sang H.
• Application Number:
  US09/366,372
• Time in Patent Office: 560 Days
• Field of Search: 385/14-15, 385/47, 385/115, 385/134
• US Class Current: 385/15
• CPC Class Codes: G02B 6/3512 the optical element being reflective, e.g. mirror
• CPC Class Codes: G02B 6/3554 3D constellations, i.e. with switching elements and switched beams located in a volume
• CPC Class Codes: G02B 6/359 of the position of the moving element itself during switching, i.e. without monitoring the switched beams
• CPC Class Codes: G02B 6/4248 Feed-through connections for the hermetical passage of fibres through a package wall see provisionally also G02B6/4428

Abstract

A packaged microelectromechanical device having a housing with a plurality of ports. A bundle of a plurality of optical fibers is mounted in one of the plurality of ports by a welded or brazed flange. An array-type microelectromechanical device is mounted in another port of the housing by a welded or brazed flange and includes a plurality of elements adapted for interacting with the plurality of optical fibers, whereby information may be transmitted into the housing via one of the optical fibers and may be transferred out of the housing via another of the optical fibers. The array-type microelectromechanical device has a plurality of electrical control pins protruding outside the housing. A pair of windows in the housing provides ports for optical sensory signals for the array-type microelectromechanical device. Two conduits for providing pressurized inert gas are mounted in the housing by welded or brazed flanges. The housing provides a hermetically sealed enclosure for the bundle of the plurality of optical fibers, the windows, the array-type microelectromechanical device, and the conduits. The pressurized inert gas is used to remove dust and moisture during assembly but remains in the finished assembly. Helium in the gas enables detection of leaks.

Claims

1. A packaged microelectromechanical device comprising:

a housing having a plurality of ports;

a bundle of a plurality of optical fibers in a first one of said plurality of ports; and

an array-type microelectromechanical device in a second one of said plurality of ports of said housing, said microelectromechanical device including a plurality of elements adapted for interacting with said plurality of optical fibers, whereby information may be transmitted into said housing via one of said plurality of optical fibers and may be transferred out of said housing via another of said plurality of optical fibers,

said housing providing a hermetically sealed enclosure of said plurality of ports.

2. The packaged microelectromechanical device according to claim 1, further including:

means in a third one of said plurality of ports of said housing for passing sensory signals to or from said array-type microelectromechanical device.

3. The packaged microelectromechanical device according to claim 2, wherein:

said means for passing sensory signals to or from said array-type microelectromechanical device comprises at least one window for optical sensory signals.

4. The packaged microelectromechanical device according to claim 2, wherein:

said array-type microelectromechanical device includes electrical control pins appearing externally at said second one of said plurality of ports.

5. The packaged microelectromechanical device according to claim 2, further including:

a conduit in a fourth one of the plurality of ports of said housing for supplying pressurized inert gas in said housing, said conduit forming part of the hermetically sealed enclosure of said housing.

6. A packaged microelectromechanical device comprising:

a housing having a plurality of ports;

a bundle of a plurality of optical fibers penetrating a first one of said plurality of ports;

an array-type microelectromechanical device in a second one of said plurality of ports of said housing, said microelectromechanical device including a support element and a plurality of elements on said support element, each of said plurality of elements being adapted for interacting with said plurality of optical fibers, whereby information may be transmitted into said housing via one of said plurality of optical fibers and may be transferred out of said housing via another of said plurality of optical fibers, said device having a plurality of electrical control pins appearing outside of said housing;

at least one window in at least a third one of said plurality of ports, said window being for optical sensory signals to or from said array-type microelectromechanical device; and

two conduits in fourth and fifth ones of the plurality of ports of said housing, said two conduits being for providing pressurized inert gas in said housing,

said housing providing a hermetically sealed enclosure of said bundle of the plurality of optical fibers, said window, said conduits, and said array-type microelectromechanical device.

7. A packaged microelectromechanical device comprising:

a housing having a plurality of ports;

a bundle of a plurality of optical fibers in a first one of said plurality of ports and having a flange welded or brazed to said housing;

an array-type microelectromechanical device in a second one of said plurality of ports of said housing, said microelectromechanical device including a support element and a plurality of elements on said support element, each of said plurality of elements being adapted for interacting with said plurality of optical fibers, whereby information may be transmitted into said housing via one of said plurality of optical fibers and may be transferred out of said housing via another of said plurality of optical fibers, said device having a plurality of electrical control pins appearing outside of said housing and having a flange welded or brazed to said housing; and

and a pressurized inert atmosphere in said housing.

8. The packaged microelectromechanical device according to claim 7, further including a pair of conduits in third and fourth ones of said plurality of ports for providing said pressurized inert atmosphere in said housing, said pair of conduits having respective flanges welded or brazed to said housing.

9. The packaged microelectromechanical device according to claim 8, further including at least one window in at least a fifth one of said plurality of ports, said window being for optical sensory signals to or from said array-type microelectromechanical device and having a flange welded or brazed to said housing, said housing providing a hermetically sealed enclosure of said bundle of the plurality of optical fibers, said window, said conduits, and said array-type microelectromechanical device.