Viavi JDSU OLS-37 Optical Laser Source 2303/41 1310/1550 & 1490 nm SM FTTH PONCondition: Used In excellent working condition, supplied as pictured with both FC and SC adapters. The OLS 37 is a 3 wavelengths singlemode source for testing FTTH PON networks at 1310 1550 nm and 1490 nm
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