  We show that a synthetic pseudospin-momentum coupling can be used to design
quasi-one-dimensional disorder-resistant coupled resonator optical waveguides
(CROW). In this structure, the propagating Bloch waves exhibit a
pseudospin-momentum locking at specific momenta where backscattering is
suppressed. We quantify this resistance to disorder using two methods. First,
we calculate the Anderson localization length $\xi$, obtaining an order of
magnitude enhancement compared to a conventional CROW for typical device
parameters. Second, we study propagation in the time domain, finding that the
loss of wavepacket purity in the presence of disorder rapidly saturates,
indicating the preservation of phase information before the onset of Anderson
localization. Our approach of directly optimizing the bulk Bloch waves is a
promising alternative to disorder-robust transport based on higher dimensional
topological edge states.
