Optical fiber communication Optical filters, multiplexers and switches should have a)Low insertion loss b)Low polarization dependence (waveguide devices have high PDL) C)Low temperature dependence of center frequency and filter shape dFlat pass band e)Good cross talk fLow cost1-5 Copyright Wang Yan 2021/2/19 Optical fiber communications a)Low insertion loss b)Low polarization dependence (waveguide devices have high PDL) c)Low temperature dependence of center frequency and filter shape d)Flat pass band e)Good cross talk f)Low cost Optical filters, multiplexers, and switches should have: