Fig. 1. Experimental setup used for observation of SBS in As2Se3 chalcogenide fiber

Fig. 2. Output optical spectra from As2Se3 fiber in backward direction for different pump power

Fig. 3. Cross sections of chalcogenide micro-structured fibers. (a) Chalcogenide glass PCF with triangular lattice cladding; (b) suspended-core chalcogenide glass PCF; (c) all-solid-state chalcogenide-tellurite photonic bandgap fiber

Fig. 4. Experimental setup used for measuring Brillouin gain

Fig. 5. Experimental setup of Brillouin fiber laser cavity

Fig. 6. Setup of 2 μm BFL

Fig. 7. Stokes laser output with different pump powers

Fig. 8. Setup for optical delay experiment using As2Se3 chalcogenide fiber

Fig. 9. Time domain waveforms of probe pulses for different Brillouin gains

Fig. 10. Experimental setup for characterizing on-chip cascaded SBS process

Fig. 11. Brillouin-scattered spectra in As2S3 chip at different peak pump powers

Fig. 12. Temporal measurements of the Brillouin frequency comb. (a) Eleven output pulses generated by coupling eleven 300 ns input pump pulses into the waveguide with 0.5 ms delay; 1 ns long zoomed-in section at (b1) 70 ns and (b2) 280 ns of all 11 traces shown in Fig. (a)

Fig. 13. Setup of MPF based on As2S3 photonic chip

Fig. 14. Theoretical simulation and experimental results. Theoretical filter response for (a) single and (c) two pumps demonstrating MPF profile reshaping (flat top); measured MPF profiles for (b) single pump and (d) dual pump

Fig. 15. Schematic of tunable MPNF