Me kana Step Index Fiber?

Tsari na Habuwar Fiber na Step-Index

Tsari: Fiber na step-index wani abu a cikin optical fiber da aka siffoce daga zahiri saboda tsarin distribution na refractive index. A matsayin optical waveguide, yana da refractive index mai zurfi a cikin core kuma refractive index na biyu a cikin cladding. Yana iya bayarwa cewa refractive index na core yana fiye daidai zuwa refractive index na cladding, amma akwai rawa da ya faru a inganci na core-cladding - don haka an kira shi "step-index."

Tsarin profile na refractive index na fiber na step-index ana nuna a cikin rasa a nan:

Propagation a Fiber na Step-Index

Idan ra'ayin lafiya ta tafi a fiber na step-index, yana yi lissafi mai ziyarci a kan lissafin lines, wanda ake iya bayarwa cewa shi ne total internal reflection a inganci na core-cladding.

Mathematically, tsarin profile na refractive index na fiber na step-index yana nuna a cikin rasa a nan:

a ita ce radius na core; r ita ce radial distance

Modes na Fiber na Step-Index

Fiber na Step-Index Single-Mode

A fiber na step-index single-mode, radius na core yana da damar daidai da ke ciki kuma yana iya tabbatar da wata mode na propagation, cewa wata ra'ayin lafiya ke tafi a fiber. Wannan halayar yana bude distortion da ke faru saboda delay differences a kan multiple rays.

Propagation na ra'ayin lafiya a fiber na step-index single-mode ana nuna a cikin rasa a nan:

Characteristics na Fiber na Step-Index Single-Mode

Radius na core a nan yana da damar daidai, wanda yake iya tabbatar da wata mode na propagation a tafi a fiber. Tushen, size na core yana da rage 2 zuwa 15 micrometers.

Fiber na Step-Index Multimode

A fiber na step-index multimode, radius na core yana da damar da yake iya tabbatar da multiple modes na propagation, cewa multiple rays ke tafi a fiber daidai. Amma, wannan propagation na multiple rays yana bude distortion saboda differences a kan propagation delays.

Propagation na rays a fiber na step-index multimode ana nuna a cikin rasa a nan:

Characteristics na Core na Fiber na Multimode

Rasan a nan yana nuna cewa radius na core yana da damar da yake iya tabbatar da multiple propagation paths. Tushen, size na core yana da rage 50 zuwa 1000 micrometers.

Refractive Index Variation a Fiber na Step-Index

Yana da kyau a bayarwa cewa tsarin profile na refractive index na fiber na step-index yana da:

Light Source da Characteristics na Fiber na Step-Index

Light-emitting diodes (LEDs) suna da muhimmanci a matsayin light sources a wasu fibers.

Advantages na Fiber na Step-Index

• Proses na production yana da damar daidai

• Cost-effective production

• Propagation via total internal reflection

Disadvantages na Fiber na Step-Index

• Single-mode propagation yana gaba capacity na information-carrying saboda restriction na only one light ray transmitting at a time.

• Difficulties in light coupling caused by the small core diameter.

Applications na Fiber na Step-Index

Fiber na step-index suna amfani da su a local area network (LAN) connections. Wannan shine saboda capacity na information transmission su yana da damar daidai zuwa graded-index fibers.