Specifications of Different Optical Fibers

Single mode step index fiber:

Core diameter: 7 to 11 μm

Cladding diameter: generally 125 μm

Coating diameter: 200 to 300 μm

Numerical aperture: 0.08 to 0.15

Performance: 2 to 5 dB/km with a scattering limit of around 1 dB/km at a wavelength of 0.85 μm

Bandwidth: Greater than 500 MHz km

Applications: These fibers are suited for high bandwidth and medium to long-haul applications using single-mode injection laser sources.

Multimode step-index fiber:

Core diameter: 100 to 300 μm

Cladding diameter: 140 μm to 400 μm

Buffer Jacket diameter: 400 to 1000 μm

Numerical aperture: 0.16 to 0.5

Attenuation: 2.6 to 50 dB/km at a wavelength of 0.85 μm, limited by absorption or scattering.

Bandwidth: 6 to 50 MHz Km

Applications: These fibers are best suited for short distances, limited bandwidth, and relatively low-cost applications.

Multimode graded-index fiber:

Core diameter: 50 to 100 μm

Cladding diameter: 125 μm to 150 μm

Buffer Jacket diameter: 400 to 1000 μm

Numerical aperture: 0.2 to 0.3

Attenuation: 2 to 10 dB/km at a wavelength of 0.85 μm with generally a scattering limit.

Bandwidth: 200MHz to 3 GHz Km

Applications: These fibers are best suited for short haul and medium to high bandwidth applications (Local Area Network)

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Dr Sushil Kumar

Dr. Sushil Kumar, a physicist, an eminent researcher and a teacher for the benefit of students and fellow physicists alike. Apni Physics is an effort to create a better platform and also to help the students to be able to have content at their hands whenever they want, online. Dr. Sushil continues to upload his lectures and post articles about latest researches in physics, academic, physics education, and also lessons about daily life and how physics define every aspect of our everyday movement and life.

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