Page 351 - Fiber Bragg Gratings
P. 351
328 Chapter 7 Chirped Fiber Bragg Gratings
Figure 7.12: Apodization profiles (half-cosine over half the grating) and re-
spective launch directions shown in (B) and (C). Group delay compared for long
wavelength launch into a grating, A: unapodized, B: short-wavelength apodized,
and C: long-wavelength apodized (after Ref. [42]).
Figure 7.13: Reflectivity (A) and group delay difference (B) of cosine apodized
grating as well as reflectivity (D) and group delay difference (C) for raised cosine
apodized grating.
