Ko te CWDM (Coarse Wavelength Division Multiplexing) me te DWDM (Dense Wavelength Division Multiplexing) he hangarau e whakamahia ana i roto i te whatunga whatu hei whakanui ake i te kaha o ngā hononga muka whatu mā te tuku i ngā hongere maha (tohu) kia tukuna i te wā kotahi i runga i te muka kotahi engari i runga i ngā roangaru mārama rerekē. Anei ngā rerekētanga matua i waenga i ngā transceiver whatu CWDM me DWDM:

Te Mokowā Roangaru:

CWDM: E 20 nanometer (nm) te tawhiti o ngā hongere. I te nuinga o te wā, ka whakamahia e te CWDM ngā roangaru mai i te 1270 nm ki te 1610 nm, me te katoa o ngā hongere 18 i roto i te whānuitanga.
DWDM: He tata rawa te tawhiti o ngā hongere tetahi ki tetahi, ko te nuinga he 0.8 nm (whatunga 100 GHz) 0.4 nm rānei (whatunga 50 GHz). Mā tēnei ka taea e ngā pūnaha DWDM te tautoko i ngā hongere maha atu i roto i te awhe whāiti kotahi.

Te Tatau o ngā Hongere:

CWDM: E tautoko ana i te iti o ngā hongere, tae atu ki te 18 hongere te nuinga.
DWDM: Ka tautoko i te maha o ngā hongere, tae atu ki te 80, neke atu rānei, ngā hongere i roto i te roopu-C (1530-1565 nm) neke atu rānei me te roopu-C me te roopu-L kua whakaroahia.

Tawhiti Tuku:

CWDM: E whakamahia ana mō ngā tawhiti poto ake, tae atu ki te 80 km me te kore whakanui, tae atu ki te 120 km me te whakanui whatu.
DWDM: I hangaia mō ngā tawhiti roa ake, mai i te 100 km ki te 4000 km, neke atu rānei, i runga i te momo whakanui me te utu whakamararatanga i whakamahia.

Te Pūmautanga o te Hongere:

CWDM: He whānui ake te tawhiti o ngā hongere, ā, kāore e tino pāngia e te pokanoa, engari ka whakawhāitihia hoki te maha o ngā hongere e wātea ana.
DWDM: He piri tata ngā hongere, e hiahiatia ana te whakahaere tika ake o ngā roangaru me ngā wāhanga kounga teitei ake hei ārai i te pokanoa i waenga i ngā hongere tata.

Utu:

CWDM: He iti ake te utu i te DWDM nā te mea he māmā ake ngā hoahoa tukuwhiti me te iti ake o ngā hongere.
DWDM: Te utu tīmatanga teitei ake nā te uaua o ngā hoahoa taputapu whakawhiti me te hiahia mō ngā wāhanga whatu me ngā tikanga pumau tika ake.

Ngāwari:

CWDM: He māmā ake te whakatinana i roto i ngā whatunga iti ki te rahi, ina iti ake ngā roangaru e hiahiatia ana, ā, he āwangawanga pea te utu.
DWDM: Ka nui ake te tauine me te kaha, ka pai mō ngā whatunga tauine nui me ngā tuku tawhiti, he mea nui te whakanui ake i te whakamahinga o te whānui o te muka.

Hei whakarāpopototanga, ko te kōwhiringa i waenga i ngā taputapu whakawhiti whatu CWDM me te DWDM e whakawhirinaki ana ki ngā āhuatanga pēnei i te kaha e hiahiatia ana, te tawhiti tuku, ngā whakaaro utu, me ngā hiahia motuhake o te hanganga whatunga. He māmā ake te CWDM, ā, he whai hua hoki mō ngā tawhiti poto me ngā whatunga iti ake, ko te DWDM ia e tuku ana i te kaha teitei ake, te toro atu roa ake, me te tauine mō ngā tono nui ake, me ngā tono uaua ake.