There are a couple of problems:
R1, R2 and R3, R4 are not hooked up correctly.
The timing for the second timer is about 20khz not 38khz.
I think I misled you on the timing of the first timer with the simulation, but it should run at about 2KHZ.
Only one sensor has the 100 ohm resistor (R8)
Don't need 1 ufd. at the sensor output.
I'm still not sure how you will use the sensor outputs. Right now you will get a negative pulse out of the sensor at the same frequency as the first timer when it can see the led.