TY - GENERIC DO - 10.20944/preprints202105.0314.v1 UR - http://dx.doi.org/10.20944/preprints202105.0314.v1 TI - Photonics Crystal Fiber Sensor Using for Sensing Environmental Pollution T2 - Preprints AU - S.Hassan*, Omar PY - 2021 DA - 2021/05/13 PB - Preprints