Signal enhancement by spectral equalization of high-frequency broadband signals transmitted through optical fibers
A new technique is discussed for signal strength enhancement of high-frequency (>1 GHz), spectrally-broad, analog signals through 1 km of optical fiber. The conventional method for optical measurement of high-frequency gamma ray signals is to use an optical fiber placed in the gamma radiation beam as a Cerenkov transducer. The radiation-induced optical signal is degraded by material dispersion in transmission through the fiber. To reconstruct the signal (which is carried by each wavelength) and preserve the high-frequency components, a narrow-band filter selects an appropriate bandwidth (1 nm). The filtered signal is detected using a high-speed, microchannel-plate (MCP) photomultiplier detector and recorded on high-speed oscilloscopes.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6507152
- Report Number(s):
- LA-UR-81-1038; CONF-810429-16
- Resource Relation:
- Journal Volume: 0288; Conference: Conference on optics, Santa Fe, NM, USA, 6 Apr 1981
- Country of Publication:
- United States
- Language:
- English
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