Front accessible optical beam switch

• US 6,285,022 B1
• Filed: 10/18/1999
• Issued: 09/04/2001
• Est. Priority Date: 10/18/1999
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Lucent Technologies, Inc. (Nokia Corporation)
• Inventors: Bhalla, Kulbir Singh
• Primary Examiner(s): LE, QUE TAN
• Application Number:
  US09/420,442
• Time in Patent Office: 687 Days
• Field of Search: 250/227.22, 250/227.21, 250/227.24, 250/216, 385/16, 385/12, 385/22, 385/17, 385/18, 200/DIG.36, 200/DIG.47
• US Class Current: 250/227.22
• CPC Class Codes: H04Q 11/0005 Switch and router aspects
• CPC Class Codes: H04Q 2011/0007 Construction
• CPC Class Codes: H04Q 2011/0024 using space switching
• CPC Class Codes: H04Q 2011/0026 using free space propagation (e.g. lenses, mirrors)
• CPC Class Codes: H04Q 2011/0052 Interconnection of switches

Abstract

An optical beam switch is designed for improved serviceability by mounting two fiber optic beam deflection arrays to face the front of a rack assembly. Inside the optical beam switch, a reflecting device is located behind each of the two fiber optic beam deflection arrays and used to reflect the light beams between the two fiber optic beam deflection arrays. Front access to the two fiber optic beam deflection arrays is then readily available whether the optical beam switch is mounted horizontally or vertically in the rack assembly.

Claims

1. A fiber optic switch apparatus comprising

a first fiber optic beam deflection array mounted to a front face of the fiber optic switch apparatus,

a first reflecting device, positioned behind the first fiber optic beam deflection array at about forty five degree angle to the first fiber optic beam deflection array, reflects optical beams received from the first fiber optic beam deflection array,

a second fiber optic beam deflection array is mounted to the front face of the fiber optic switch apparatus and disposed along the front face at a predetermined distance away from the first fiber optic beam deflection array, and

a second reflecting device, positioned behind the second fiber optic beam deflection array at about forty five degree angle to the second fiber optic beam deflection array, receives reflected optical beams from the first reflecting device and further reflects those reflected beams to the second fiber optic beam deflection array.

2. The fiber optic switch apparatus of claim 1 wherein

the first and second fiber optic beam deflection arrays include optical fiber cluster assemblies.

3. The fiber optic switch apparatus of claim 2 wherein

the first and second fiber optic beam deflection arrays are mounted on a convex spherical surface on the front face.

4. The fiber optic switch apparatus of claim 1 wherein

the first and second fiber optic beam deflection arrays are flatly mounted on the front face.

5. The fiber optic switch apparatus of claim 1 wherein

the first and second reflecting devices are mirrors.

6. The fiber optic switch apparatus of claim 1 wherein

the spacing between the first and second fiber optic beam deflection arrays can be about zero.

7. The fiber optic switch apparatus of claim 1 wherein

at least one of the first and second reflecting devices is partially transmissive and wherein the fiber optic switch apparatus further comprises

a plurality of optical sensors mounted on the rear of the reflecting device on one or more of the surfaces fiber optic switch apparatus to monitor optical beams originated from the first fiber optic beam deflection array.