Cable Description

The HFBR-R/exxyyz series of plastic optical cables are constructed with a single-step index fiber jacket wearing a black polyethylene jacket. Duplex fiber consists of two single fibers connected by a zipcord network. Standard (Type="R") and Extra Low Loss (Type="E") cables meet UL VW-1 Flame Retardant Specifications (UL File #E89328). The cable has no connection or connection options.

feature

Compatible with Broadcom Multifunction Link Series connectors and fiber optic assemblies

1 mm diameter plastic optical fiber (POF) in two grades: Standard POF (-40°C to 85°C) with typical attenuation of 0.22db/m

High performance ultra low loss POF with 0.19dB/m typical attenuation (-40°C to 85°C).

application

Factory automation and industrial data link control of factories

Intra-system links; board-to-board, rack-to-rack telecom switching systems

Computer to peripheral data link, PC bus extension

Private LAN

Digitized Video

medical instruments

Reduce lightning and voltage transient susceptibility

High voltage isolation

Plastic Fiber Specs: HFBR-R/Exxyyz Absolute Maximum Ratings

Mechanical/Optical Properties, TA=-40 to +85°C, unless otherwise specified

notes:

1. The installation temperature is the range where the cable can be bent and pulled without damage. Below -20°C, the cable becomes brittle and should not be subject to mechanical stress.

2. The short-term pulling force is less than 30 minutes.

3. Short-term bending radius less than 1 hour does not work.

4. Bend 90° on a 25 mm radius mandrel. The bend radius is the radius of the mandrel around which the cable is bent.

5. Typical data is 25°C.

6. The propagation delay constant is the inverse of the group velocity of the optical power propagation delay. The group velocity is v=c/n, where c is the speed of light in free space (3xl08m/s) and n is the effective core refractive index.

7. Note that αR rises at a rate of about 0.0067db/°C, where thermal rise refers to a change in LED temperature by more than 25°C. Refer to Figure 1 for a typical plastic optical fiber attenuation vs. wavelength at 25°C.

Plastic Fiber Connector Type

Connector Description Four connector types are available for use with plastic optical fibers: Simplex, Simplex Latch, Duplex Duplex Latch. All connectors provide a snap-in that operates when mated with a multifunction link assembly. Simplex connectors are color-coded for easy identification of transmitter and receiver connections. Duplex connectors are keyed to ensure proper positioning when inserting. RTV adhesives can be used if POF cables/connectors are used at extreme operating temperatures, or experience frequent and extensive temperature cycling effects (see Plastic Connection Instructions for more details). The connectors are made of flame retardant VALOX UL94 V-0 material (UL file E121562).

Simplex connectors provide a fast and stable connection for applications requiring 8 N (1.8 lb) component connection retention force. These connectors are available in gray (HFBR-4501Z) or blue (HFBR-4511Z). Simplex connectors with horizontal, vertical or inclined packaging.

Simplex latching connectors are designed for rugged applications requiring greater retention force - 80 N (18 lbs) - than simplex non-latching connectors provide. Once the connector has entered the module when the simplex lock is inserted, the connector latching mechanism should be packaged horizontally, or have a top surface with a vertical package or an angled package. Inserting the latching connector out of alignment with either module will not result in positive latching. Press down on the connector lever and pull the connector assembly out of the module housing. Simplex locking connectors are available in grey (HFBR-4503Z) or blue (HFBR-4513Z).

Duplex connectors provide convenient duplex cable termination and keying to prevent incorrect insertion of modules into a duplex configuration. Duplex connectors are compatible with dual combinations of horizontal, vertical, or angled packages (eg, two horizontal transmitters, two vertical receivers, one horizontal transmitter horizontal receiver, etc.). Duplex non-latching connectors are available in parchment, off-white (HFBR-4506Z).

Duplex latching connectors are better for rugged needs than non-latching duplex connectors. When inserting the duplex latching connector into the module, the connector locking mechanism should be aligned with the top surface of the double combination package horizontally, vertically or slanted. Duplex latching connectors are in gray (HFBR-4516Z).

HFBR-4505Z/4515Z adapter mates two simplex HFBR panel/bulkhead feedthrough connectors - 4501Z/4511Z terminated plastic fiber optic cable. Maximum panel thickness is 4.1 mm (0.16 in). This adapter can be used as a cable in-line splice using two simplex connectors. Adapters are available in gray (HFBR-4505Z) and blue (HFBR-4515Z). This adapter works with POF Duplex, POF Simplex Latching or HCS connectors.

Absolute Maximum Ratings for Plastic Optical Fiber Connectors

notes:

1. Storage and operating temperature refers to the temperature range that the connector can be used without mechanical stress. Mounting temperature refers to the temperature range in which the connector can be installed on the fiber, and the temperature range in which the connector can be installed on the fiber to connect and disconnect with the transmitter and receiver modules.

2. The recommended nut torque is 0.57Nm.

Mechanical/Optical Characteristics of Plastic Optical Fiber Connectors TA=-40 to +85°C unless otherwise specified.

notes:

1. Typical data is +25°C.

2. After 2000 insertions, no significant decrease in retention was observed. Non-latching connectors hold lower temperatures when raised. For applications requiring high temperature and high retention force, locking connectors are recommended.

3. For applications requiring frequent temperature cycling at extreme temperatures, please contact Broadcom Limited Connectivity Technologies.

Minimum and maximum limits for αCC in the temperature range of 4.0°C to 70°C. A typical value for αC C is +25°C.

5. Factory polishing or field polishing following recommended procedures.

6. Destructive insertion force is typically 178 N (40 lbs).

Plastic Cable Step-by-Step Connection Instructions

The following step-by-step guide describes how to terminate plastic fiber optic cables. It is both field and factory installed. Connectors can be easily installed with strippers, cutters and crimpers on cable end tools. Trimming of cables was done using Broadcom's AFBR-4594Z polishing kit, including polishing jig, 600-grit sandpaper, and 3-micron pink lapping film (3M Company, OC3-14). The joint can be used immediately after polishing. Materials required for plastic fiber optic terminations are:

1. Broadcom plastic optical cable (eg: HFBRRUS500Z, HFBR-RUD500Z, HFBR-EUS500Z or HFBREUD500Z)

2. Industrial razor blades or wire cutters

3.16 gauge locking wire strippers (Example: Ideal StripmasterTM Model 45-092).

4. HFBR-4597Z crimping tool

5. AFBR-4594Z polishing kit

6. One of the following connectors:

a) HFBR-4501Z/4503Z Grey Simplex/Simplex Latching Connectors and HFBR-4525Z Simplex Crimp Rings

b) HFBR-4511Z/4513Z Blue Simplex/Simplex Latching Connectors and HFBR-4525Z Simplex Crimp Rings

c) HFBR-4506Z Parchment (off-white) Duplex Connector and HFBR-4526Z Duplex Crimp Ring

d) HFBR-4516Z Grey Latching Duplex Connector and HFBR-4526Z Duplex Crimp Ring

step 1

The zipper construction of the twin-conductor cable separates the channels. Channels should be separated from a minimum of 100 mm (4 inches) to a maximum of 150. mm (6 inches) back from the end for connection and polishing. After cutting the cable to the desired length, strip approximately 7 mm (0.3 in) of the outer jacket with a No. 16 wire stripper. Excess webbing on the duplex may require trimming of the cable to allow a simplex or simplex locking connector to slide over the cable. When using duplex connectors and duplex cables, the split duplex cables must be stripped to the same length on each cable. This allows the cable to plug into the duplex connector.

Step 2

Place the crimp ring and splice on the cable; the fiber should protrude approximately 3 mm (0.12 in.) past the end of the connector. Carefully place it so that the crimp ring is completely flush with the connector, leaving a small gap between the crimp ring and the flange. Then crimp the ring in place using a crimping tool. One crimp tool is used for all POF connector crimping requirements. For applications with extreme temperature operation or frequent temperature cycling, improved connectors can be made by using RTV (General Electric Company, RTV-128 or Dow Corning 3145-RTV) adhesive. Upon insertion of the fibers, the fibers crimped normally. After the RTV has cured, the connector can be polished and ready to use. NOTE: By convention, the gray connector is placed on the transmitter cable end and the blue connector is placed on the receiver cable end to maintain color coding (different colored connectors are mechanically identical). Simplex connector crimp rings cannot be used with duplex connectors and duplex connector crimp rings cannot be used with simplex connectors due to size differences. Single-sided curls have a dull sheen; double-sided curl rings are shiny and thin

Step 3

Any excess fiber protruding from the connector end is cut; however, the trimmed fiber should be at least 1.5 mm (0.06 in) from the connector end. Fully insert the connector into the trimmed fiber fixture protruding from the bottom in the polishing jig. This plastic polishing jig can be used to polish two simplex connectors or simplex latching connectors at the same time, or one duplex connector. NOTE: The four points on the bottom of the polishing jig are wear indicators. The replacement polishing jig point is no longer visible. Typically, polishing fixtures can be used 10 times; 10 duplex connectors or 20 simplex connectors, two at a time. Place 600-grit sandpaper on a flat, smooth surface, press down on the connector, and polish the fiber and connector using a figure-8 stroke pattern until the connector is flush with the polished bottom fixture. Wipe connectors and clamps or tissue with a clean cloth

Step 4

Place the flush connector and polishing jig on the side of the 3-micron pink lapping film in the dark and continue polishing the fiber and connector for about 25 strokes. This fiber end should be flat, smooth and clean. This cable is now ready to use. NOTE: The fine polishing step using the pink abrasive film results in a coupling performance improvement of approximately 2 dB for the transceiver link or bulkhead/connector light is a 600 grit polish. This fine polish can be factory polished with Broadcom. The fine polishing step may be omitted if the additional 2 dB of optical power is not required, the same as the short connection length. Proper polishing of the fiber/connector surface results in a tip diameter between 2.5 mm (0.098 in) min and 3.2 mm (0.126 in) max

Plastic Optical Fiber Connector

HFBR-4501Z Gray Simplex Connector/Crimp Ring

HFBR-4511Z Blue Simplex Connector/Crimp Ring

HFBR-4503Z Grey Simplex Locking Connector with Crimp Ring

HFBR-4513Z Blue Simplex Lock Connector with Crimp Ring

HFBR-4506Z Parchment Duplex Connector with Crimp Ring

HFBR-4516Z Grey Double Lock Connector with Crimp Ring

HFBR-4505Z Gray Adapter (bulkhead/feedthrough)

HFBR-4515Z blue adapter (bulkhead/feedthrough)

Plastic Optical Fiber Accessories

HFBR-4522Z 500 HFBR-0500 Product Port Plug

HFBR-4525Z 1000 Simplex Crimp Ring

HFBR-4526Z 500 Duplex Crimp Ring

AFBR-4594Z polishing kit (one polishing tool, two pieces of 600-grit sandpaper and two pieces of 3-micron pink abrasive film)

HFBR-4597Z Plastic Fiber Crimping Tool