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7.6
Optical Connectors
Optical connectors for the SFPs qualified for use with the 922-MES are LC type. The mating connector for the
LC interface, with a standard boot, is shown in the figure below. Ruggedized (metal) LC compatible connectors,
such as the Molex LC2+ and Diamond F3000, can also be used.
Standard SFP optical transceivers typically have a transmit and receive optical bushing (LC type) for dual fiber
operation. The transmit side (Tx) and the receiver side (Rx) of an SFP is shown below.
Figure 7-2: Tx and Rx ports of an LC-type SFP Transceiver
Optical Connectors Care:
It is critical to ensure all fiber connectors are clean and free of dirt and debris. Even a small amount of dirt
or fluid contaminant may degrade link performance, and most reported optical link problems are due
simply to poor or contaminated optical connections.
Keep protective dust covers on fiber connectors and bushings when not in use.
Do not touch the white ceramic ferrules of the connectors with bare hands or objects other than
cleaning materials.
Prior to making a fiber connection, clean the barrel and tip of the ferrule using a suitable solvent,
such as reagent grade isopropyl alcohol, and a lint-free optics cleaning tissue, such as Kimwipes
EX-L. Carefully dab any dirt or debris off the face of the ceramic ferrules. Excessive dirt may need
to be cleared with pressurized air from a can prior to wiping the ferrule to avoid scratching the
fiber itself. Do not used air from a compressor as it may be contaminated with oil.
During mating or un-mating of fiber connectors with bushings, keep the connector aligned as
straight as possible. Avoid side loading the ceramic ferrule, which can crack the internal alignment
sleeve in the bushing.
Each fiber connector should be inspected with a handheld fiber microscope prior to final assembly
to ensure there are no scratches, pits, debris, or fluid contamination on the fiber face. Ensure
connectors do not have any optical power present prior to inspection, e.g. with a handheld power
meter.
Focal Technologies Corporation
A Moog Inc. Company
Ferrule
Figure 7-1: LC connector with Standard Boot
Tx
Rx
(Optical
(Optical
Output)
Input)
Model 922-MES – User Manual
Document No. 922-0662-00, Rev 1.0
®
Page 7-3
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