Splice protector

nounStandard termFiber Optics

A heat-shrink sleeve with a steel rod that is shrunk over a fusion splice to protect the bare glass.

A tube about 40 or 60 mm long with an outer heat-shrink jacket, a hot-melt inner tube and a stainless or ceramic strength rod. It is slid onto one fiber before splicing, centered over the joint afterwards and shrunk in the splicer's oven, then stored in a splice tray. Without it the stripped glass at the splice snaps at the slightest bend.

Heard on the job

Forgot the splice protector again, now you get to cut it out and burn it twice.

Insider tip

Sliding the sleeve on before cleaving is the habit every splicer learns after cutting out a perfect splice to add a forgotten one.

Also heard as

  • heat-shrink sleeve
  • sleeve
  • splice sleeve