  Quartz fiber calorimetry is a technique the signal generation mechanism of
which is based on the Cherenkov effect. In this article we try to give a
comprehensive overview of the subject. We start with a general introduction to
calorimetry where the basic elements that characterize the development of
electromagnetic and hadronic showers are discussed. Then we describe in detail
the operation principle and the properties of calorimeters equipped with quartz
fibers. The main advantages of this type of calorimeters are the radiation
hardness, the fast response and the compact detector dimensions, features that
derive from the quartz material and the specific mechanism of operation. A
section is devoted to presenting the quartz fiber calorimeters that have been
built or planned to in various experiments to operate as centrality detectors,
trigger detectors, luminosity monitors or general purpose very forward
calorimeters.
