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Principal Sponsors:
 | Dense Wavelength Division Multiplexing (DWDM) Testing |
2. Spectral Measurements
The major new requirement in the test and monitoring of DWDM systems is the need to characterize components and link accurately as a function of wavelength. Instrumentation to do so already exists—the optical spectrum analyzer (OSA) has long been a fixture in network development and test laboratories. Now, however, similar capabilities must be provided in the field. Capabilities must be usable for maintenance personnel working in conditions that are very different from those in the stable, controlled laboratory environment. Major advances in instrumentation engineering are needed to take measurement capabilities that were once available only in a laboratory out into the field (see Figure 2).
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