Valley is an inevitable degree of freedom for light manipulation in photonic systems. Here, we introduce the valley concept into photonic crystals with breaking time-reversal and inversion symmetries, leading to the observation of one-way propagation of bulk photonic states.

© 2017 Optical Society of America

PDF Article


You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access OSA Member Subscription