Chapter 1 Outline
1-6
1.2 Intended Use
The main uses of optical spectrum measurements are listed below:
● Evaluation of optical devices such as laser diodes, optical diodes,
optical transceivers, etc.
● Evaluation of active devices such as optical amplifiers
● Loss evaluation of passive devices such as optical fibers, optical
couplers, optical isolators, optical filters, etc.
● Monitoring signal level and wavelength of communications circuits
The standards for public communications, LANs, etc., specify the
wavelength to be used. As a result, devices used in these circuits must
meet these standards, which requires measurement of the optical
spectrum and loss of these devices.
For example, in optical communications using multiplexing of several
different wavelengths in one optical fiber (WDM) must be monitored by
accurate measurement of the level and wavelength of each part of the
multiplexed signal. This is achieved by measuring the optical spectrum in
the optical circuit.
The MS9740B has the functions and performance needed to make parts
evaluation, WDM communication, and etc. For a detailed explanation of
these measurements, refer to Chapter 5 “Measurement Functions”.
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