Ntụgharị asụsụ

Fiber optic cable VS ọla kọpa

Fiber optic cable

Cables using copper conductors propagate electrical signals, while optical fibers propagate optical signals. There are two types of general network access, cable access and fiber optic access. We know that light is faster than electricity in a vacuum. So is fiber optic access to the Internet actually faster than cable access?

Optical signals have a high frequency and fiber optic usually has a wide bandwidth. This allows optical fibers to accommodate more signals to be transmitted simultaneously.

Na mgbakwunye, the signal attenuation in optical fiber is much smaller compared to the electrical signal in copper wire. Ọzọkwa, optical signals are more resistant to interference than electrical signals.

According to Shannon’s theorem, the transmission rate is directly influenced by the signal-to-noise ratio. The signal loss of optical fiber is low. This is why the transmission rate of optical fiber is faster than that of cable.

Counting attenuation, relay devices, and electromagnetic wave interference, cable performance will be worse. Ọmụmaatụ, eriri abụọ gbagọrọ agbagọ nke a na-ejikarị nwere ike ịgaru naanị 100 m. Ogologo anya chọrọ ndị na-emegharịgharị ka ha gaa n'ihu na mgbaama.

Enwere ike iji ya naanị obere oge maka mbugharị. Mgbasa ozi ọ bụla na-ewekwa oge. Ọnwụ nke ngwa anya nnyefe na ngwa anya eriri dị nnọọ ala karịa ọnwụ nke isi na waya. Ọ na-emekarị njem karịrị puku kwuru puku mita.

N'iji ya eme ihe, eriri optic eriri nwere ikike nnyefe ka ukwuu karịa eriri ọla kọpa. Ọ nwere ogologo ngalaba relay, obere nha, obere arọ na enweghị nnyonye anya electromagnetic.

Ya mere, ugbu a, ọ etolitela n'ọkpụkpụ azụ nke ahịrị nnyefe wired maka ahịrị okporo osisi dị anya, relays n'ime obodo, nkwukọrịta okpuru mmiri nke oke osimiri na trans-oceanic, na netwọk mpaghara mpaghara, netwọk nkeonwe, were gabazie. Ọ malitere ịmalite n'ọhịa nke netwọọdụ wiring ndị na-edebanye aha n'ime obodo, na-enye ahịrị nnyefe maka eriri-na-ụlọ (eriri eriri na ụlọ) na nnukwu ọgbọ agbakwunyere ọrụ.

Ihe dị iche n'etiti eriri optic na ọla kọpa

Fiber optic cables are composed of two or more glass or plastic fiber cores (núcleos de fibra de plástico). Cables, n'akụkụ aka nke ọzọ, are made with metal as the conductor. Inside the cable is mainly a copper core wire. The core diameter is 0.32mm, 0.4mm, 0.5mm, wdg. Na-emekarị, the larger the diameter, the greater the communication capacity. While the fiber optic cable is divided only by the number of cores, which are 4, 6, 8, 12, 24 pairs, wdg.

Copper cables transmit electrical signals, ebe eriri anya na-ebufe akara ngosi anya. The ngwa anya ụzọ propagation nke eriri optic cable bụ multiplexed, ya mere eriri optic eriri na-ebunye mgbaama ngwa anya ngwa ngwa karịa eriri nkịtị na-ebufe akara eletrik.

Ọsọ kacha ọsọ nke azụmahịa otu laser transmitter otu ihe nkiri fiber optic netwọk njikọ n'ụwa eruola 100 GB kwa nkeji. n'otu oge ahụ, nnyefe fiber optic na-akwado anya njikọ ihe ruru kilomita abụọ ma ọ bụ karịa, na-eme ka ọ bụrụ nhọrọ kacha mma maka ịmepụta netwọk ndị buru ibu.

Tụnyere ya na eriri ọla kọpa isi, eriri optic eriri nwere uru nke ezigbo iguzogide nnyonye anya electromagnetic, elu nzuzo, nnukwu ọsọ na nnukwu nnyefe ikike. N'ihi ọnụ ahịa, ọ dịkwa ọnụ karịa. Na ọganihu nke oge, Ndị na-ahụ maka telecom ugbu a na ndị na-arụ ọrụ USB ejirila nwayọọ nwayọọ tọgbọrọ eriri fiber optic 4 ~ 12 na mpaghara obibi yana mpaghara azụmahịa..

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