ʻO ka inoa piha o ka module opticalmea hoʻolele uila, he mea koʻikoʻi i ka ʻōnaehana kamaʻilio fiber optical. Na ia ke kuleana no ka hoʻololi ʻana i ka hōʻailona ʻōpika i loaʻa i hōʻailona uila, a i ʻole ka hoʻololi ʻana i ka hōʻailona uila hoʻokomo i kahi hōʻailona optical paʻa i ka helu kūpono.
ʻO kaʻōpona ʻōpika ua haku ʻia me nā mea hana optoelectronic, nā kaapuni hana a me nā interface optical. Loaʻa i nā mea optoelectronic nā ʻāpana ʻelua: ka hoʻouna (TOSA) a me ka loaʻa ʻana (ROSA).
ʻO nā ʻāpana ʻenehana koʻikoʻi o ka module optical e pili ana i ka mana optical transmitted average, extinction ratio, loaʻa ka ʻike, a me ka mana optical saturated.
1. ʻO ka awelika o ka mana opua i hoʻouna ʻia e pili ana i ke ʻano helu helu o ka mana optical ke 1 ka manaʻo hōʻailona a me ka mana opi ke 0.
2. 'O ka lakio ho'opau e pili ana i ka ratio o ka awelika o ka mana optical i ho'ouna 'ia o nā code "1" a pau i ka 'awelika o ka mana optical o nā code "0". E pili ana ia i ka naʻau o ka loaʻa ʻana. Pono e ho'omalu 'ia ka lakio ho'opau i loko o ka palena kūpono. Hiki ke hoʻemi ʻia ka hoʻopaʻi mana, akā ʻoi aku ka nui e hoʻonui i ka jitter pili i ke kumu o ka laser.
3. ʻO ka loaʻa ʻana o ka naʻau e pili ana i ka palena liʻiliʻi e hiki ai i ka hopena loaʻa ke loaʻa ka hōʻailona. Ke emi ka ikehu hōʻailona o ka hopena e loaʻa ana ma mua o ka sensitivity loaʻa maʻamau, ʻaʻole e loaʻa i ka hopena loaʻa kekahi ʻikepili.
4. E pili ana ka waiwai o ka mana opua saturated i ka mana opua hiki ke ike ma ka hope loa o ka module optical, ma ke ano -3dBm. Ke ʻoi aku ka nui o ka mana optical i loaʻa ma mua o ka mana optical saturated, e hana pū ʻia nā hewa bit. No laila, inā e hoʻāʻo ʻia ka module optical me ka mana optical transmitting kiʻekiʻe me ka ʻole o ka attenuation a me ka loopback, e loaʻa nā hewa bit.
