# US 2010/0166377 A1 · Compact high density central office fiber distribution system

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- Number: US 2010/0166377 A1
- Document ID: US20100166377A1
- Status: Published application
- Kind: A1
- Application number: 12/347,625
- Filed: 2008-12-31
- Published: 2010-07-01
- Earliest claimed: 2008-12-31
- Assignees: AM Networks LLC
- Inventors: K.R. Suresh NAIR; K.P. Chandran; Benoy Sarasan; Pradeep K.N.; Aniz Muhammad
- Web page: https://patentgrep.com/patent/US20100166377A1

## CPC

- G02B 6/44524: {with frame parts or auxiliary devices mounted on the frame and collectively not covering a whole width of the frame or rack (cassettes G02B6/4453)}
- G02B 6/44528: {Patch-cords; Connector arrangements in the system or in the box (routing arrangements H04Q1/00)}
- G02B 6/4453: {Cassettes}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A fiber distribution system having a rack mounted chassis and a fiber distribution rack to mount in the chassis. The system includes one or more splitter modules which are designed to be mounted in the fiber distribution rack. The splitter modules have a compact design and contain a plurality of fiber splitters. The system also includes a plurality of spools, which are located on opposite sides on the rack mounted chassis, and used to support the routing of fibers. The spools are configured to equally share the fiber load coupled to a fiber distribution rack between a pair of spools. The fiber distribution system also contains a cable guide tray for supporting the fiber cables and the system includes a plurality of radius limiters to minimize cable bends.

## Claims

### Claim 1

A fiber distribution system (FDS), comprising:
a rack mountable chassis;
a fiber distribution rack configured to be mountable to the chassis;
a plurality of splitter modules configured to be mounted internal to the rack; and
at least a pair of spools, located on opposing sides of the rack mountable chassis in close proximity to at least one fiber distribution rack, and configured to support one portion of fiber cables when they are coupled with the splitter modules from a first side and are supported by a first spool and a second portion of fiber cables when they are coupled with the splitter modules from a second side and are supported by a second spool.

### Claim 2 (depends on 1)

The FDS of claim 1, further comprising:
a cable guide tray configured to be affixed to the front of the fiber distribution rack.

### Claim 3 (depends on 2)

The FDS of claim 2, wherein the cable guide tray comprises at least one curved end configured to eliminate excessive cable bend.

### Claim 4 (depends on 2)

The FDS of claim 2, wherein the cable guide tray comprises a plurality of cable retention clips positioned on the side of the cable guide tray opposite the connections to the fiber distribution rack and located in line with at least one splitter module.

### Claim 5 (depends on 2)

The FDS of claim 2, wherein the cable guide tray comprises a plurality of cable guide slots positioned on the side of the cable guide tray opposite the connections to the fiber distribution rack and located in line with at least one splitter module.

### Claim 6 (depends on 1)

The FDS of claim 1, wherein the fiber distribution rack includes a plurality of guides located within the fiber distribution rack for accepting the plurality of splitter modules.

### Claim 7 (depends on 1)

The FDS of claim 1, wherein each splitter module further comprises:
a rectangular sealed enclosure with a face flange on one end of the enclosure and a flange along the longer sides of one face of the enclosure;
a plurality of splitters disposed internal to the enclosure;
a plurality of splice closure (SC) adaptors coupled to the plurality of splitters and positioned on the face flange; and
a pair of fasteners positioned through the face flange and configured to affix the splitter module to the fiber distribution rack.

### Claim 8 (depends on 7)

The FDS of claim 7, wherein the plurality of splitters comprises different types and configurations.

### Claim 9 (depends on 7)

The FDS of claim 7, wherein the pair of fasteners are nylatches.

### Claim 10 (depends on 7)

The FDS of claim 7, wherein the fiber distribution rack includes a plurality of guides for accepting the plurality of splitter modules.

### Claim 11 (depends on 10)

The FDS of claim 10, wherein the flange along the longer sides of one face of the enclosure facilitates front end loading of the splitter module into the fiber distribution rack by placing the flange into a corresponding pair of the plurality of guides.

### Claim 12 (depends on 11)

The FDS of claim 11, wherein the coupling of the longer sides flange and the pair of guides allows the splitter module to be held in an intermediate position.

### Claim 13

(canceled)