  We demonstrated an all polarization-maintaining fiber (PMF) laser which could
offer selective transverse mode emission. Offset and cross splicing between PMF
sections was used to generate higher order mode and to yield a birefringence
induced mode filter. Polarization rotation technique (PRT) was used to select
the output beam profile. Both linear cavity and ring cavity were explored.
Experimentally, 360{\deg} rotating LP11 mode and OAM vortex beam with plus and
minus 1 topological charges have been realized from an all PMF linear cavity
laser and a ring cavity laser respectively.
