CWDM (Coarse Wavelength Division Multiplexing) uye DWDM (Dense Wavelength Division Multiplexing) matekinoroji ese anoshandiswa mu optical networking kuwedzera kugona kwe fiber optic links nekubvumira nzira dzakawanda (signals) kuti dzitumirwe panguva imwe chete pamusoro pe fiber imwe chete asi pamagetsi akasiyana echiedza. Heano misiyano mikuru pakati pe CWDM ne DWDM optical transceivers:

Kureba kweWavelength:

CWDM: Machaneli akaparadzaniswa ne20 nanometers (nm). Kazhinji, CWDM inoshandisa mawavelengths kubva pa1270 nm kusvika 1610 nm, ine machaneli gumi nemasere mu spectrum.
DWDM: Machaneli akakamurwa zvakanyanya, kazhinji 0.8 nm (100 GHz grid) kana 0.4 nm (50 GHz grid). Izvi zvinobvumira masisitimu eDWDM kutsigira machaneli akawanda mukati mehukuru hwakafanana hwespectral.

Kuwanda kweNzira:

CWDM: Inotsigira nhamba diki yemachaneli, kazhinji inosvika machaneli gumi nemasere.
DWDM: Inotsigira huwandu hwakawanda hwemachaneli, angangosvika machaneli makumi masere kana kupfuura muC-band (1530-1565 nm) kana kupfuura neC-band yakawedzerwa uye L-band.

Kureba kweKutapurirana:

CWDM: Inowanzo shandiswa padaro pfupi, kusvika makiromita makumi masere pasina kuwedzera simba, uye kusvika makiromita zana nemakumi maviri nekuwedzera simba.
DWDM: Yakagadzirirwa madaro marefu, kubva pa100 km kusvika 4000 km kana kupfuura zvichienderana nerudzi rwekuwedzera simba uye kupararira kwaro kwakashandiswa.

Kugadzikana kweChiteshi:

CWDM: Machiteshi akapararira zvakanyanya, izvo zvinoita kuti asanyanya kukanganiswa asi zvinoderedzawo huwandu hwemachiteshi aripo.
DWDM: Machaneli akazara zvakanyanya, izvo zvinoda kudzorwa kwakanyatsojeka kwema wavelengths uye zvikamu zvemhando yepamusoro kudzivirira kupindirana pakati pemachaneli ari pedyo.

Mutengo:

CWDM: Kazhinji inodhura zvishoma pane DWDM nekuda kwemagadzirirwo ari nyore etransceiver uye nzira shoma.
DWDM: Mutengo wekutanga wakakwira nekuda kwemagadzirirwo akaomarara etransceiver uye kudiwa kwezvikamu zve optical zvakanyatsonaka uye nzira dzekusimbisa.

Kuchinjika:

CWDM: Zviri nyore kuisa muma network madiki kusvika pakati nepakati uko kunodiwa ma wavelength mashoma, uye uko mari ingave iri dambudziko.
DWDM: Inopa mukana wekukura uye kugona kukuru, zvichiita kuti ive yakakodzera kune network hombe uye ma transmissions ari kure uko kushandiswa kwakanyanya kwe fiber bandwidth kwakakosha.

Muchidimbu, sarudzo pakati peCWDM neDWDM optical transceivers inoenderana nezvinhu zvakaita sehukuru hunodiwa, daro rekutumirwa, kufungwa kwemutengo, uye zvinodiwa chaizvo zve network infrastructure. CWDM iri nyore uye inodhura zvishoma kune madaro mapfupi uye network diki, nepo DWDM ichipa kugona kwakanyanya, kusvika kure, uye kugona kukura kune maapplication makuru uye anonetsa.