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I<br />
Coupler Module<br />
Passive <strong>Optic</strong>al Component Modules<br />
LUCENT TECHNOLOGIES<br />
Features<br />
Modules house a variety of passive optical components<br />
which offer signal splitting/coupling or multiplexing demulti<br />
plexing capability with minimum insertion loss and high<br />
device reliability.<br />
Module design provides a retainer to isolate the optical<br />
component from vibration.<br />
Module ports are pre-connectorized with SC connectors.<br />
Front access connector ports on modules provide for<br />
efficient routing of input and output cabling.<br />
Vertically oriented modules plug in to standard LGX<br />
shelves, enabling incremental application growth and<br />
multiple networking options.<br />
LGX labeling system provided for easy identification of<br />
signal sources and output destinations.<br />
LGX shelf is configurable for both 19" and 23" rack<br />
mount capability.<br />
Description<br />
Evolving broadband network architectures will increasingly<br />
employ a variety of passive optical components. These components<br />
facilitate sharing of a single optical signal among multiple<br />
distribution points, or the ability to combine multiple signals for<br />
transmission along a single path.<br />
AT&T’s passive optical component modules provide LGX ®<br />
compatible format to reliability and cost-efficiently distribute or<br />
combine broadband laser signals within the central office or<br />
equipment headend.<br />
AT&T’s passive optical component modules consist of plug-in<br />
units containing either 1) optical coupler/splitters in 1 x N configurations,<br />
with balanced or unbalanced splitting ratios or 2)<br />
wavelength division multiplexing (WDM) devices, operating in<br />
the 1310/1550 nm region. A module mat house single or multiple<br />
passive optical components, with each device port terminated<br />
on the front of the module with SC connectors.<br />
Various configurations are available, utilizing different connector<br />
types or locations, "double width" modules for devices with<br />
>6 ports, and several different types of optical components.<br />
The optical components are highly reliable, with low insertion<br />
loss performance.<br />
The optical component module shelf design is based on<br />
AT&T’s proven LGX Distribution Shelf technology. Its mounting<br />
I33<br />
<strong>Fiber</strong> <strong>Optic</strong> <strong>Products</strong><br />
panel can accommodate up to 12 single-width (or 6 doublewidth)<br />
modules, thus providing a capacity of 72 ports in each<br />
shelf. The shelf also provides a clear, easy to read labeling system<br />
for convenient identification of optical input source and output<br />
destination. Additionally, the shelf and modules are totally<br />
compatible with AT&T’s LGX Broadband Network Bay Frame<br />
system, thus providing ease in mounting and flexibility in equipment<br />
configuration.<br />
Application<br />
<strong>Fiber</strong> in the loop (FITL)<br />
Passive <strong>Optic</strong>al Networks<br />
Video, voice and data applications in hybrid fiber/coax networks<br />
Signal splitting or combining<br />
Capacity upgrade of 1310 nm systems to 1310/1550 nm operation<br />
Single Mode 1 x N Coupler Modules<br />
<strong>Optic</strong>al Performance Specifications -<br />
1 x 2 Single Mode <strong>Optic</strong>al Coupler Modules<br />
Parameter 1 x 2 Wavelength Independent <strong>Optic</strong>al Couplers<br />
Operating Wavelength Window (nm) 1310 and 1550<br />
Bandpass (nm) 1260-1360 and 1480-1580<br />
Operating Temperature Range(°C) -40 to +85<br />
Coupling Ratios (%) 5-50<br />
Maximum Insertion Loss (dB) for both passbands 3.9<br />
Maximum Uniformity (dB) for both passbands 0.5<br />
Minimum Directivity/Return Loss (dB) 55<br />
NOTE: The specifications listed above do not include the effect of connector loss.<br />
Typical connector loss is 0.2 dB. Maximum connector loss is 0.5 dB. The values<br />
give above for insertion loss, uniformity and directivity apply to the balanced 1 x<br />
2 device (50/50 split ratio). Specification values for devices with other split ratios<br />
is available upon request.<br />
<strong>Optic</strong>al Performance Specifications -<br />
1 x N Single Mode Coupler Modules<br />
Parameter 1 x N Wavelength Independent Single Mode Couplers<br />
Operating Wavelength Window (nm) 1310 and 1550<br />
Bandpass (nm) 1260-1360 and 1480-1580<br />
Operating Temperature Range (°C) -40 to +85<br />
Splitting Ratio (%) Balanced Splitting Ratio<br />
Configuration 1 x 2 1 x 3 1 x 4 1 x 5 1 x 6 1 x 8 1 x 16<br />
Max. Insertion Loss (dB) for both passbands<br />
3.9 5.9 7.3 8.4 9.3 10.7 14.5<br />
Max. Uniformity (dB) for both passbands<br />
0.5 0.8 1.0 1.1 1.3 1.5 2.0<br />
Minimum Directivity (dB) 55<br />
NOTE: The specifications listed above do not include the effect of connector loss.<br />
Typical connector loss is 0.2 dB. Maximum connector loss is 0.5 dB.<br />
For Ordering Information contact your Telewire Supply Sales<br />
Representative.<br />
SOUTHEAST: Norcross, GA 800-433-3765 EAST: Rockaway, NJ 800-458-4524 MIDWEST: Rolling Meadows, IL<br />
SOUTHWEST: Irving, TX 800-643-2288 WEST: Santa Ana, CA 800-227-2869 800-428-7596<br />
© 1996 TELEWIRE SUPPLY
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