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Fiber Optic Connectorized Components

Honeywell reserves the right to make changes in order to improve design and supply the best products possible.

Application Note
Fiber Optic Connectorized Components
Honeywell reserves the right to make changes in order to improve design and supply the best products possible.
This discussion will cover the Part Number Guide, Connectorized Components, and Base Components sections. PART NUMBER GUIDE The first section of the Part Number Guide consists of connectorized receiver / detector components and base receiver / detector components. The connectorized components consist of a base component inserted and aligned in an active fiber optic connector. In all cases, the specifications for the base component are met for the connectorized components. The second section consists of connectorized transmitter / LED components, base transmitter / LED components, modules and modems. The connectorized components consist of a base component inserted and aligned in an active fiber optic connector. In all cases, the specifications for the base component are met for the connectorized component. In some instances, the connectorized component has better power specifications than the base component. The reason for this will be discussed later. We will not discuss modules and modems in this session. The third section is a cross reference table that helps to identify the component part number for each connectorized component. The base component and connector are on the axes. Example: when the HFE4020 is mounted in an ST®-style low profile (ST®-LP) connector, the final assembly becomes the HFE4834.
Application Note
Fiber Optic Connectorized Components
Figure 1 Fiber Optic Cable When inserting an active fiber optic component into a fiber optic connector, the amount of power that can be launched into a cable can be dramatically changed by the alignment of the light from the transmitter / LED to the end of the fiber optic cable (see figure 3). The active spot of light is more intense in the center of the component (see figure 4) and any misalignment can drastically change the amount of light accepted by the cable. By aligning the transmitter / LED intensity to give the required power launched into a centered fiber optic cable, the user will have a product that is best matched for general usage. Light intensity is reduced by the square of the distance from the source. Therefore, it is very important to minimize any air gap between the fiber optic transmitter and the end of a fiber optic cable. The process for assembly and alignment of transmitters / LEDs and epoxying them into a fiber optic connector is more difficult than most users realize. The base component must be aligned and set in the proper position then epoxied and cured without misalignment. Honeywell Optoelectronics will economically perform this operation for you, thus allowing you to concentrate on the design work for your equipment. All products are tested in their final configuration for the required optical and electrical specifications before the parts are shipped. Figure 3a Properly Aligned Devices
PLASTIC
CLADDING CORE C L
JACKET
Figure 2a ST® Connector - Alignment Notch on Connector
FIBER OPTIC CABLE
METAL
Figure 2b SMA Connector - No Alignment Notch on Connector
FIBER OPTIC CABLE
Figure 3b Misaligned Devices (2 Degrees)
PLASTIC
FIBER OPTIC CABLE
2 DEGREES MISALIGNMENT
METAL
FIBER OPTIC CABLE
Honeywell reserves the right to make changes in order to improve design and supply the best products possible.
Application Note
Fiber Optic Connectorized Components
ST® AND SMA STYLE CONNECTORS ST® and SMA connectorized components can be located in the Honeywell Fiber Optic Data Book and Selection Guide. The new ST® version of the Honeywell Fiber-DIP product and the SMA version can be found in the Fiber-DIP section of the Honeywell Fiber Optic Data Book or Selection Guide. The optical specifications are better for these devices than for the base components. This is due to the ability of Honeywell to actively align both the transmitter / LED and receiver / detector components. Figure 4 Active Spot Intensity
WINDOW
Note: ST is a registered trademark of AT & T.
LIGHT SPOT
METAL PACKAGE BASE COMPONENT
PLASTIC PACKAGE BASE COMPONENT
RELATIVE RADIANT EMITTANCE
100 90 80 70 60 50 40 30 20 10 0 250 200 150 100 50 0 50 100 150 200 250 RADIAL DISTANCE FROM OPTICAL AXIS (MICRONS)
Honeywell reserves the right to make changes in order to improve design and supply the best products possible.