Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Long-Wavelength Single-Mode Fiber Transmission Systems

Not Accessible

Your library or personal account may give you access

Abstract

Introduction Single mode fiber transmission systems in the 1.0 - 1.7 μm wavelength region have many advantages favorable for public telecommunication network as well as information transmission means in industries.1-3 (1) Loss is extremely low in low OH content fibers owing to reduced Rayleigh scattering.4 (2) Dispersion in silica material vanishes at 1.27 μm5 and the total dispersion, including waveguide dispersion, can be reduced in the 1.3 - 1.6 μm wavelength range.1 (3) Large core size for single mode fibers at 1.3 μm, typically about 10 μm, is favorable for low splicing and connection loss, as compared to values for 0.85 μm wavelength. Splice and connector losses are now comparable with those for multimode fibers. (4) Optical sources fabricated by InGaAsP/InP double hetero-structures can be used in the 1.0 - 1.55 μm wavelength range. Preliminary reliability evaluation showed that InGaAsP lasers will have longer ultimate lifetime than AlGaAs lasers.6 (5) Germanium avalanche photodiodes can be used as detectors in the 1.0 - 1.6 μm wavelength range with sufficient quantum efficiency and pulse response.7 Ternary and quaternary III-V compound devices are now under extensive study to obtain dark current and multiplication noise performance superior to germanium. (6) Yttrium iron garnet, which has large Verdet constant, can be used.as compact non-reciprocal devices in its transparent wavelength region beyond 1.1 μm.8 Isolators can be used to secure stable oscillator operation independent of possible reflection from fiber lines.

© 1980 Optical Society of America

PDF Article
More Like This
First field trial of long-haul transmission systems using single-mode fiber cable at μm wavelength

Eiji Iwahashi
MC4 Optical Fiber Communication Conference (OFC) 1981

Semiconductor Injection Lasers for Long Wavelength Optical Communications

Michiharu Nakamura
MD1 Integrated and Guided Wave Optics (IGWO) 1980

Effect of Curvature on the Cutoff Wavelength of Single Mode Fibers

Paul D. Lazay
MSMF93 Optical Fiber Measurements (OFM) 1980

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved