How to test the wavelength of an optical module
Therefore, we need to use a wavelength meter or wavelength sensor to measure the wavelength of the optical module and compare it with the specified wavelength range. Accurately testing an optical transceiver means proving two things: that the module is emitting the right power at the right wavelength, and that the link it's attached to delivers that signal without unexpected loss or reflections. An optical spectrum analyzer (OSA) quantifies and displays the power of an optical light source over a given wavelength range. Think of it as a "microscope for light," revealing details invisible to the naked eye. Digital Diagnostic Monitoring is a technology that enables real-time monitoring of various parameters in optical modules.
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