disp and field from file, merging not done yet

testing/configs/override/fiber2.toml

@@ -0,0 +1,13 @@
+name = "fiber 2"
+
+[fiber]
+beta = [-1.183e-26, 8.1038e-41, -9.5205e-56, 2.0737e-70, -5.3943e-85, 1.3486e-99, -2.5495e-114, 3.0524e-129, -1.714e-144]
+gamma = 0.13
+length = 0.05
+model = "custom"
+
+[fiber.variable]
+input_transmission = [0.9, 0.95]
+
+[simulation]
+z_num = 16

testing/configs/override/initial_config.toml

@@ -0,0 +1,32 @@
+name = "full anomalous"
+
+[fiber]
+beta = [ -1.183e-26, 8.1038e-41, -9.5205e-56, 2.0737e-70, -5.3943e-85, 1.3486e-99, -2.5495e-114, 3.0524e-129, -1.714e-144,]
+gamma = 0.11
+length = 0.02
+model = "custom"
+input_transmission = 1.0
+
+[pulse]
+power = 10000
+t0 = 2.84e-14
+shape = "gaussian"
+quantum_noise = false
+intensity_noise = 0
+
+[simulation]
+dt = 1e-15
+parallel = true
+raman_type = "measured"
+repeat = 3
+t_num = 16384
+tolerated_error = 1e-9
+z_num = 64
+behaviors = [ "spm", "ss",]
+frep = 80000000.0
+lower_wavelength_interp_limit = 3e-7
+upper_wavelength_interp_limit = 1.9e-6
+ideal_gas = false
+
+[pulse.variable]
+wavelength = [ 8.35e-7, 8.3375e-7,]