Author:
Inoue Takuya,Morita Ryohei,Nakano Shuei,Ishimura Shota,Nishimura Kosuke,Takahashi Hidenori,Tsuritani Takehiro,De Zoysa Menaka,Ishizaki Kenji,Suzuki Masatoshi,Noda Susumu
Abstract
We demonstrate frequency modulation (FM) of watt-class photonic-crystal surface-emitting lasers (PCSELs) toward long-distance coherent free-space optical communications. We also demonstrate two-section PCSELs that can further enhance FM signals while suppressing amplitude modulation (AM).