125-MHz Photoreceivers
Operation • 5
Operation
Introduction
The New Focus Models 1801 and 1811 125-MHz, low-
noise photoreceivers address the needs of the
photodetector community in the area of low-noise,
high-gain, RF photoreception. These photoreceivers
are available either DC or AC coupled. Their typical
bandwidth is 125 MHz with a current gain of 40 V/
mA.
The performance of these units is achieved through
the use of solid RF design together with the
implementation of some of the latest advances in
commercially available amplifier chips. The detector is
shielded to avoid RF pickup. New Focus offers two
models to match your different wavelength needs. The
specifications at the rear of the manual list each
model’s characteristics.
These units address nearly all of the general purpose
needs of the RF photoreception community. They all
have a very large gain
−
bandwidth product, low noise,
high drive capability and a large dynamic range. These
receivers will enable wide bandwidth low-noise
detection of signals distributed over fiber-optic cables
or found in high resolution spectroscopy, fiber-optic
sensors, optical metrology, and many other
applications.
18X1 HS rcvr rev G.fm Page 5 Thursday, September 20, 2001 2:08 PM
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