[8p-N221-1~13] 3.10 Photonic structures and phenomena

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)English Presentation

[8p-N221-12] Slow-light modes in photonic graphene ribbon structures

〇(D)Chengkun Zhang^1,2, Natsuko Ishida¹, Satoshi Iwamoto^1,2 (1.RCAST, 2.IIS)

Keywords:

photonic crystal,slow light,wide mode width

Topological photonic crystal (PhC) heterostructure, consisting of gapless photonic graphene inserted between two domains of topologically distinct PhCs, has been widely investigated for supporting wide-mode-width single guided modes [1-3]. It raises a question of whether topological PhCs claddings are essential for achieving wide-mode-width single modes. Previously, we found that pure photonic graphene ribbons (PGNs) can support wide-mode-width single modes even without topological PhCs claddings, with zigzag-zigzag boundaries formed at top and bottom edges [4]. Here, we report that slow-light modes with wide mode widths are realized in photonic graphene ribbons with bearded-bearded and zigzag-bearded boundaries.