Large-Area Balanced Photoreceivers
Operation • 5
Operation
Introduction
The Model 23X7 is a general-purpose balanced
photoreceiver with a large-area photodetector. These
receivers can be powered by battery or by an external
±
15-V power supply. There are two versions of the
Model 23X7 receiver, each based on a different
photodetector:
Complete specifications begin on page 21.
The large area of the photodetector makes it easy to
couple light from a variety of sources (including diode
lasers, broadband sources, and light from optical
fibers) onto the detector without requiring precise
optical alignment or focusing. Figures 1 and 2 on the
following page show the typical responsivity curves
for the different detectors.
Model
Wavelength
Type
Diam.
2307
400–1070 nm
silicon
8 mm
2317
800–1750 nm
germanium
5 mm
Note:
Note:
23x7 LA Blncd Rcvr revA.fm Page 5 Tuesday, September 28, 2004 1:59 AM