1. Fig. 10-1: Transmission windows

2. Fig. 10-2: Typical WDM Network

3. Fig. 10-3: Basic Star Coupler

4. Fig. 10-4: Fused-fiber coupler

5. Fig. 10-5: Coupler characteristics

6. Fig. 10-6: Generic 2X2 guided-wave coupler

7. Fig. 10-7: Symmetric/ asymmetric couplers

8. Fig. 10-8: Power distribution vs guide length

9. Fig. 10-9: Symmetric coupler response

10. Fig. 10-10: Asymmetric coupler response

11. Fig. 10-11: Fused-fiber star coupler

12. Fig : 8x8 star coupler 12

13. Fig. 10-13: Basic Mach-Zehnder interferometer

14. Fig. 10-14: Four-channel wavelength multiplexer

15. Fig. 10-15: Reflection grating

16. Fig. 10-16: Bragg grating formation

17. Fig. 10-17: Simple demux function

18. Fig. 10-18: Arrayed waveguide grating

19. Fig. 10-20: Tunable DBR Laser

20. Fig. 10-21: Tunable laser characteristics

21. Fig. 10-23: Tunable optical filter

22. Fig. 10-27: Extended add/drop mux