Ultra-Low Crosstalk FSO Circulator for Full C-Band WDM Bidirectional Satellite Communication. - Takashi Kan; Kensuke Murakami; Shota Ishimura; Akihiko Nishitani; Tomonori Yazaki; Shin Fukuhara; Akira Akasaka; Hidenori Takahashi; Takehiro Tsuritani (ECOC, 2025)