Bandwidth of OMM-6810B Optical Multimeter Analog Output

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Bandwidth of OMM-6810B Optical Multimeter Analog Output

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This ILX Lightwave Internal Technical Note presents the results of bandwidth measurements on the OMM-6810B Optical Multimeter analog output.A 1310 nm uncooled FP laser was driven with the LDX-3210 Precision Laser Current Source and the fiber connected to the OMM-6727B power/wave head. A Hewlett-Packard 322120A function generator was used to modulate the current source first at 0.5V p-p, which resulted in a current modulation of ±2.5 mA about the CW set point of 15 mA. The second used a 0.1V p-p signal, which modulated the current source ±0.5 mA about the 15 mA set point. The laser was modulated to produce approximately midrange analog output signals, and the output observed on the Tektronix oscilloscope.

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