Ini Mbahnya Wi-Fi, Namanya Li-Fi

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Wah wah wah, jaman emang benar benar berubah. Perkembangan teknologi sekarang ini memang semakin maju saja. Dulu siapa yang mengira pesawat itu akan nyata, Dulu siapa juga yang mengira wifi bisa terjadi. Nah sekarang ini info yang terbaru seputar wifi adalah adanya teknologi Li Fi. Kita sudah bisa merasakan wifi internet saja senangnya bukan main. Nah Lifi ini nanti yang digadang gadang akan membuat rekor baru dengan kecepatan cahaya. Apa sih sebenarnya Li Fi itu ?

Pengertian Li Fi

Pengertian LifiLifi adalah singkatan dari Light Fidelity. Kalau kita mengacu pada kamus bahasa inggris Light itu cahaya dan Fidelity artinya kesetiaan, ketepatan, ketelitian, kejituan dan lain lain. Maka jika diartikan yang lebih detil adalah jaringan internet dengan menggunakan cahaya sebagai media untuk mengantar/membawa data ke komputer.

LiFi ini masih tergolong jaringan baru. Dan di Indonesia belum ada jaringannya. LiFi di ibaratkan sebagai kelanjutan atau perbaruan dari Wifi. Ya kita berdoa saja semoga jaringan Li Fi ini akan menggantikan jaringan Wifi. Karena dengan teknologi cahaya yang pasti koneksi akan lebih cepat dan stabil. Layaknya kabel fiber optik yang juga mengandalkan sinar .

Jaringan LiFi memungkinkan kita dapat berinternet dengan bebas tanpa kabel, mirip dengan WiFi. Tetapi dalam menghubungkan koneksi internet dengan LiFi dibutuhkan hanya “cahaya” saja sebagai media komunikasinya.

Cara Kerja Lifi

cara kerja lifi1 cara kerja lifi2Tidak seperti wifi, cara kerja dari teknologi baru Li-Fi ini sangatlah sederhana. Anda harus memiliki sumber cahaya di salah satu ujung seperti LED, dan juga sumber cahaya lain seperti detektor foto (Light Sensor) di ujung lainnya. Begitu LED mulai bersinar, foto detektor atau sensor cahaya pada ujung lainnya akan mendeteksi cahaya dan diartikan sebagai biner 1. Bagaimana data akan dikirimkan melalui teknologi Li-Fi ini? Menyalakan cahaya LED dalam jumlah tertentu akan membuat sebuah pesan tertentu yang akan dikirimkan. Kilatan cahaya tersebut kemudian akan ditangkap oleh detector cahaya yang akan menerima pesan yang disampaikannya tersebut. Sekarang, bayangkan jika ada beberapa LED dengan warna yang berbeda, berkedip bersama-sama dan membangun informasi yang sangat besar untuk dikirimkan secara sekaligus. Untuk saat ini bisa diperkirakan jika laser warna hijau dan laser warna merah digunakan secara bersamaan akan dapat mengirimkan data pada kecepatan 1 Gbps. Cepat sekali bukan ? dan tentunya koneksi ini lebih stabil dibanding koneksi wifi.


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