Drop Optical Fiber with Cicada Resistance
- Technological fields
- Telecommunications Network Technologies
- Keyword
- Drop
- Cicada
- Hard sheath
- Laboratory organization
- NTT Access Network Service Systems Laboratories
Overview
As a countermeasure against disconnection due to a species of cicada called the “bear cicada” (which occur on optical-fiber input (“drop”) cables to houses, particularly those in western Japan), a “drop optical fiber with cicada resistance” has been developed.
This is an optical drop fiber that maintains the workability of a conventional optical drop fiber with non-cicada resistance as a result of optimization of the structure and sheath material of the fiber cable.
Features
- Optical-fiber core is protected from the ovipositor of a cicada by hard sheath.
- Cicada resistance is achieved without impairing fiber workability by optimizing material hardness and cross-sectional structure.
- Compatibility with related products is assured by utilizing the same structure and dimensions as conventional drop cable.
Application scenarios
- Drop cable to houses, apartment blocks, and office buildings

