根据以下的平板光波导在波长为1550 nm时的折射率数据

1.作 出 不 同 波 导 芯 厚 度 d

(0<d<15  m)对应的TE模式

与TM模式的色散图；

2.给出满足单模与双模传输的

波导厚度范围。

3.确定包层所需的最小厚度a

与b的值-The refractive index of the optical waveguide data at a wavelength of 1550 nm according to the following plate

1. do not make the same waveguide core thickness d

(0 <d <15  m) corresponding to the TE mode

And TM mode dispersion map

2. The single-mode and dual-mode transmission is given to meet the

Waveguide thickness range.

3. To determine the required minimum thickness of a cladding

And the value of b