Detection of seismograph signal using fiber bundle sensor by Yasin, M., Apsari, Retna, Ningsih, Kristia, Yhuwana, Y.G.Y., Zulkarnaen, M., Djamal, Mitra, Meilano, Irwan, Evita, Maria, Aminah, Nina Siti, Srigutomo, Wahyu, Setiawan, Ari, Darmawan, Herlan, Suyanto, Imam, Wahyudi, -, Suryanto, Wiwit, Putra, Heriansyah, Irzaman, -, Perdinan, -, Harun, Sulaiman Wadi