Fig. 1. Tobacco pad

Fig. 2. Smoke environment generated by tobacco pad burning

Fig. 3. Schematic diagram of testing device

Fig. 4. Experimental setup for 532 nm linearly polarized light for forward transmission

Fig. 5. Experimental setup for 1550 nm linearly polarized light for forward transmission

Fig. 6. Test results of linearly polarized light forward propagation in smog at both 532 nm and 1550 nm wavelengths