Agilent 8703B Lightwave
Component Analyzer
Technical Specifications
50 MHz to 20.05 GHz
modulation bandwidth
2
This technical specification describes
the measurement accuracy and operating conditions of
the Agilent 8703B lightwave component analyzer.
Additional ordering information can be found
in the 8703B configuration guide.
Testing 10 Gb/s optical components
The 8703B is a manufacturing test solution for such
diverse optical and electro-optical components, assemblies and devices as lasers and LEDs, photodiodes, fiber cables, connectors and transmitter/receiver pairs. Measurements can also be made on
electrical microwave components such as amplifiers, cables, connectors,
attenuators, and waveguides.
Source and receiver slope responsivity performance, including such
parameters as modulation bandwidth, can be tested on optical sources
and receivers. For sources and receivers, electrical reflection performance can also be tested. For optical devices, the 8703B offers optical
transfer function tests, including insertion loss and group delay. Optical
reflection performance can be tested on all types of components and
devices using the external Agilent 11890A directional coupler. Microwave
devices can also be tested for electrical transfer function test and electrical reflection response tests.
Calibrated Measurements
One of the key benefits of the 8703B is its ability to perform calibrated
measurements on optical components. Through the temperaturecompensated optical components in the lightwave deck and errorcorrection algorithms, the 8703B removes the inherent systematic errors
from the measured data of the device. The ability to make calibrated,
repeatable measurements assures accuracy, reliability and confidence
in the components being tested. The 8703B is a general-purpose instrument that can measure a wide range of parameters. It is a flexible platform of measurement assurance for optical, electro-optical and electrical
components.
Programmability
Reflecting the inherent need for test automation in the production environment, the 8703B incorporates robust GPIB programmability into the
system firmware. Test limits such as a 3 dB bandwidth key are included.
There are five markers, as well as limit lines for ripple and bandwidth, all
of which are programmable through the GPIB port. There are 1601 trace
data points for increased accuracy in the measurements.
The 8703B firmware is backward compatible with the Agilent 8703A
lightwave component analyzer, allowing ease of integration into production lines that are already set up for that instrument.
The 8703B lightwave component
analyzer is a unique, general-purpose
instrument for testing electro-optical
communication system components.
It is designed specifically for the
high-volume demands of 10 Gb/s
component manufacturing test.
3 dB bandwidth measurements can be
easily automated on the 8703B.
3
Lightwave source characterization
(electrical-in and optical-out)
Source slope responsivity tests
• Modulation bandwidth
• Modulated output power flatness
• Modulation signal group delay
and differential phase
• Reflected signal sensitivity
• Distance-time response
Optical reflection tests
• Port return loss
Electrical reflection tests
• Port impedance or return loss
Lightwave receiver characterization
(optical-in and electrical-out)
Receiver slope responsivity tests
• Modulation bandwidth
• Modulated output power flatness
• Modulation signal group delay
and differential phase
Optical reflection tests
• Port return loss
Electrical reflection tests
• Port impedance or return loss
Optical device characterization
(optical-in and optical-out)
Optical transfer function tests
• Insertion loss or gain
• Modulated output power flatness
• Modulation signal group delay
and differential phase
• Modal dispersion
Optical reflection response tests
• Port return loss
Microwave device characterization
(electrical-in and electrical-out)
Electrical transfer function tests
• Insertion loss or gain
• Output power flatness
• Group delay and deviation from linear phase
Electrical reflection response tests
• Port impedance or return loss
Types of measurements
performed with the Agilent 8703B
Optical-to-Optical Device Measurement Specifications
The following data applies after a response and isolation calibration has been performed.
O/O Noise Floor
Optical-to-Optical Measurement Performance Data
Description Frequency Range Noise Floor (dBo)
Maximum Noise Floor Amplitude
1
0.05 to 8 GHz -30
8.0 to 20.05 GHz -25
1
Noise floor is measured with 30 Hz IF bandwidth and with an averaging factor of 6.
4
8703B Specifications
and Characteristics
Specifications apply to instruments in the following situation:
• Temperature is in the range of +20°C to +30°C
• Analyzer has had a warm-up time of two hours in a stable ambient temperature
• Measurement calibration has been performed
Measurement Conditions
The specifications in the following sections apply for
measurements made using the following conditions:
• 30 Hz IF Bandwidth
• Stepped Sweep Mode
• Autobias ON
• 0.5% Smoothing
Description Specification Characteristic
Lightwave Source
Wavelength
Option 155 1555 nm,± 5 nm
Option 131 1308 nm,±9.5 nm
Average Optical Output Power from Laser +5 Bm
Laser Beam Divergence 12%
Spectral Width <20 MHz
Modulation Bandwidth 0.05 to 20.05 GHz
Modulation Frequency Resolution 1 Hz
Maximum Optical Power Input to Modulator 10 dBm (10 mW)
Insertion Loss of Modulator 9 dB
Average Optical Output Power from Modulator -4 dBm (400 µW)
Modulated Signal Output Power from Modulator (p-p) -7 Bm (200 µW)
Modulation Index
a
40% to 100%
Optical Output Return Loss (for all front panel optical ports) >30dB
Lightwave Receiver
Wavelength 1000-1600 nm
Input Modulation Bandwidth 0.05 to 20.05 GHz
Maximum Average Input Power Operating Level +3 Bm
Input Port Return Loss >30 B
Microwave Source
Frequency Bandwidth 0.05 to 20.05 GHz
Frequency Resolution 1 Hz
Output Power Range -65 to +5 dBm
Microwave Receiver
Frequency Bandwidth 0.05 to 20.05 GHz
Maximum Input Power Operating Level +10 dBm
a. Modulation index is calculated as: maximum signal power/average power.
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