In this paper

we focus on the protection schemes in waveband switching optical network

and propose two kinds of waveband-path-based protection schemes

which are dedicated protection （DP） scheme and share protection （SP） scheme. Furthermore in SP scheme

three algorithms with different forms of sharing wavelength protection subpaths are proposed. They are WSP algorithm in which only step-by-step wavelength protection subpaths are shared

BSP algorithm in which only wavelength protection subpaths tunneled in waveband path are shared and BWSP algorithm in which both kinds of wavelength protection subpaths are shared. Here "subpath" refers to a portion of an end-to-end wavelength path. Algorithms above are evaluated and results show that the capability of BWSP algorithm is the best.