Figure 7
From: Tunable optical limiting optofluidic device filled with graphene oxide dispersion in ethanol
Schematic of the experimental setup.
A train of femtosecond optical pulses are firstly coupled with ASE noise by using a 50:50 optical coupler. An EDFA is then used to compensate the power loss of the coupling. A pair of collimators is used to couple the light into the free space and back to the fiber and the optofluidic device is place in between. Finally, an oscilloscope is to measure the waveform. ASE source: amplified spontaneous emission sourse. EDFA: erbium-doped fiber amplifier. PD: photodetector. This figure was drawn by Bo Dai.
