The light emitted from an optical fiber is divergent, and under normal conditions, the limited size of the optics inside the OSA monochromator causes the divergent light to be blocked, and therefore unable to contribute to a strong optical signal.
Using the new fiber NA adapter on a GI50/125 multimode fiber results in the numerical aperture (NA) value being halved. Reducing the divergence of the optical input increases the optical monochromator performance, producing a 5 dB (factor 3) increase in signal strength.
The resulting performance improvement provides a better dynamic range in passive component testing and a higher level of stability in active component testing.
Yokogawa's AQ6370 series of optical spectrum analyzers offers best-in-class optical performance combined with excellent functionality and operability for applications including R&D, production testing of optical devices, and transmission systems.
Covering a wavelength range of 350 to 2400 nm and applicable to both single-mode and multi-mode fibers, the AQ6370 series offers unparalleled optical performance, including wavelength accuracy of ±0.01 nm, high wavelength resolution (0.02 nm), ultra-high dynamic range of 78 dB (typical), wide level range of -90 dBm, and fast sweep speed of 0.2 s/100 nm.
