The Keysight Technologies, Inc. 81600B Tunable Laser Source Family offers the
full wavelength range from 1260 nm to 1640 nm with no wavelength gaps. This
provides test instrumentation with maximum flexibility.
Investing in the Keysight 81600B Tunable Laser Source Family can realize the
cost efficiency and performance required to test components for coarse and
dense wavelength division multiplexing (CWDM, DWDM) and passive optical
networks (PON).
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Keysight 81600B Tunable
Laser Source Family
The Keysight 81600B Tunable Laser
Source Family consists of seven
modules that fit into the bottom slot
of the Keysight 8164B Lightwave
Solution Mainframe.
The 81600B Option 200 and 201 Allband Tunable Laser Sources are the
flagship models, featuring the widest
tuning range of 200 nm, respectively
185 nm, with a single laser and a
70 dB/nm signal-to-source spontaneous emission ratio (signal-to-SSE
ratio). The excellent low-SSE performance typically allows crosstalk
measurements of better than
70 dB/nm signal-to-source spontaneous emission ratio (signal-to-SSE
ratio). This and the high signal power
permit measurements of wavelength
isolation to 100 dB, most often limited
by power meter sensitivity.
Full wavelength range from
1260 nm to 1640 nm
The Keysight 81600B Tunable Laser
Source Family offers the full wavelength range from 1260 nm to
1640 nm with no wavelength gaps.
The N7700A software suite has a
measurement engine for IL and PDL
that can combine the sweeps of up
to 3 tunable laser wavelength ranges.
Such a setup can be used for testing
CWDM multiplexers.
O-band models for the latest
applications
The 81600B options 130 and 132
cover the wavelength range from
1260 nm to 1375 nm for an important
set of applications. With the PMF
output fiber, these are a good
match for testing and developing
components with silicon photonics
technology. And especially with lowSSE, the Option 130 is the best tool
for testing wavelength filters for LR4
components.
Integrated solutions for
swept-wavelength spectral
measurements
The 81600B is supported with the
N7700A software suite for spectral
measurements of insertion loss,
polarization dependent loss and
dispersion in combination with power
meters and polarization instruments.
These provide optimal sweptwavelength accuracy dynamic range.
See the N7700A brochure for details.
Low SSE output port for
high dynamic range
The 81600B option 201, 200, 160, 150,
140 and 130 Tunable Laser Sources
are equipped with two optical
outputs.
The low-SSE output port of the
dual-output models delivers a signal
with ultra-low source spontaneous emission. It enables accurate
crosstalk measurement of DWDM,
CWDM and PON wavelength filtering
components by producing light only
at the desired wavelength.
The second output port provides
high optical power, adjustable over a
power range of more than 60 dB via a
built-in optical attenuator.
High power output for multipurpose component tests
The Keysight 81600B Options 142
and 132 provide one output port with
high stimulus power for applications
where the SSE level is not critical.
The 81600B Option 142 can also
be equipped with a built-in optical
attenuator, so providing an adjustable
power range of 60 dB.
Built-in wavelength meter for
optimum tuning precision
The Keysight 81600B Tunable Laser
Source Family includes a built-in real
time wavelength meter which realizes
an absolute wavelength accuracy of
± 10 pm (typical ± 3.6 pm) as a standalone instrument.
Specied performance in the
continuous sweep mode
As manufacturing yield expectations
becomes more and more stringent,
it is important that all instruments
deliver optimum performance under
all measurement conditions.
The Keysight 81600B Tunable Laser
Source Family can sweep as fast as
80 nm/s with specified accuracy during the sweep.
Realize the cost efciency
and performance benets in
WDM component tests
The testing of optical filters is based
on a generic principle, namely the
stimulus-response test. The stateof-the-art approach is a wavelengthresolved stimulus-response measurement utilizing a tunable laser source
that is capable of fast and precise
sweeps across the entire wavelength
range, and optical power meters.
For DWDM components, high wavelength accuracy and dynamic range
are critical. For CWDM and PON components, a wide wavelength range,
dynamic range and tight costing are
key targets. If the investment in the
test solution can be shared among
many different type of filters, the
contribution to each individual filter
is minimized. In this way, cost targets
for CWDM and PON components can
be met without sacrificing accuracy.
Investing in the Keysight 81600B
Tunable Laser Source Family can
realize both the cost efficiency and
performance benefits required.
Polarization maintaining
ber for the test of
integrated optical devices
The 81600B Tunable Laser Source
Family is ideal for characterizing integrated optical devices. Its PMF output
ports provide a well-defined state of
polarization to ensure constant measurement conditions for waveguide
devices. A PMF cable easily connects
to an external optical modulator.
> 50 MHz (1475 nm to 1625 nm, at max. constant output power)
control on
Maximum output power (continuous power
during sweep)
Output 1 (low SSE)Output 2 (high power)
≥ +3 dBm peak (typical)
≥ +2 dBm (1520 nm to 1610 nm)
≥ –2 dBm (1475 nm to 1625 nm)
≥ –7 dBm
5
AttenuationMax. 60 dB
Power repeatability (typical) ± 0.003 dB
Power stability
4
± 0.01 dB, 1 hour
Typical ± 0.03 dB, 24 hours
Power linearity± 0.1 dB± 0.1 dB (± 0.3 dB in attenuation mode)
Power atness versus wavelength± 0.25 dB 3, typical ± 0.1 dB± 0.3 dB 3, typical ± 0.15 dB
Continuous sweep mode
At 5 nm/sAt 40 nm/sAt 80 nm/s
Dynamic power reproducibility (typical)± 0.005 dB± 0.01 dB± 0.015 dB
Dynamic relative power atness (typical)± 0.01 dB± 0.02 dB± 0.04 dB
Side-mode suppression ratio (typical)≥ 60 dB (1520 nm to 1610 nm)
Signal to source spontaneous emission
2
ratio
Output 1 (low SSE)Output 2 (high power)
≥ 70 dB/nm (1520 nm to 1610 nm)≥ 48 dB/nm (1520 nm to 1610 nm)
≥ 80 dB/0.1 nm (typical, 1520 nm to
1610 nm)
≥ 66 dB/nm (typical, 1475 nm to 1625 nm)≥ 43 dB/nm (1475 nm to 1625 nm)
≥ 60 dB/nm (typical)
Signal to total source spontaneous
emission ratio
2
Relative intensity noise (RIN)
(0.1 to 6 GHz) (typ.)
100 kHz
control off
Effective linewidth (typical),
> 50 MHz (1480 nm to 1580 nm, at max. constant output power)
coherence control on
Maximum output power (continuous
power during sweep)
Output 1 (low SSE)Output 2 (high power)
≥ –1 dBm peak (typical)≥ +7 dBm peak (typical)
≥ –3 dBm (1520 nm to 1570 nm)≥ +5 dBm (1520 nm to 1570 nm)
≥ –6 dBm (1480 nm to 1580 nm)≥ +4 dBm (1480 nm to 1580 nm)
≥ –7 dBm (1450 nm to 1590 nm)≥ –1 dBm (1450 nm to 1590 nm)
AttenuationMax 60 dB
Power repeatability (typical)± 0.003 dB
Power stability
3
± 0.01 dB, 1 hour
Typical ± 0.03 dB, 24 hours
Power linearity± 0.1 dB± 0.1 dB (± 0.3 dB in attenuation mode)
Power atness versus wavelength± 0.2 dB, typical ± 0.1 dB± 0.3 dB, typical ± 0.15 dB
Continuous sweep mode
At 5 nm/sAt 40 nm/sAt 80 nm/s
Dynamic power reproducibility
± 0.005 dB± 0.01 dB± 0.015 dB
(typical)
Dynamic relative power atness
± 0.01 dB± 0.02 dB± 0.04 dB
(typical)
Side-mode suppression ratio
2
(typical)
Signal to source spontaneous
emission ratio
2
≥ 40 dB (1480 nm to 1580 nm)
Output 1 (low SSE)Output 2 (high power)
≥ 65 dB/nm (1520 nm to 1570 nm)≥ 45 dB/nm (1520 nm to 1570 nm)
≥ 75 dB/0.1 nm (typical, 1520 nm to 1570 nm)≥ 55 dB/0.1 nm (typical, 1520 nm to 1570 nm)
≥ 61 dB/nm (typical, 1480 nm to 1580 nm)≥ 42 dB/nm (1480 nm to 1580 nm)
≥ 59 dB/nm (typical, 1450 nm to 1590 nm)≥ 37 dB/nm (1450 nm to 1590 nm)
Signal to total source spontaneous
emission ratio
2
Relative intensity noise (RIN)
(0.1 to 6 GHz) (typical)
2
≥ 60 dB (1520 nm to 1570 nm)
≥ 50 dB (typical, 1450 nm to 1590 nm)
–145 dB/Hz (1480 nm to 1580 nm)
At 5 nm/sAt 40 nm/sAt 80 nm/s
≥ 30 dB (typical, 1520 nm to 1570 nm)
1. Valid for one month and within a ± 4.4 K temperature range after automatic wavelength zeroing.
2. At maximum output power as specified per wavelength range.
Option 003Built-in optical attenuator, 60 dB attenuation (for Option 142)
Connector interface
One Keysight 81000xI-series connector interface is required for Options 142 and 132
Two Keysight 81000xI-series connector interfaces are required for Options 201, 200, 160, 150, 140 and 130
Custom-made TLS
A 1650 nm Tunable Laser Source is available on request. Please contact your local Keysight Sales Of ce.
Laser safety information
All laser sources specied by this data sheet are classied as Class 1M according to IEC 60825-1 (2007).
All laser sources comply with 21 CFR 1040.10 except for deviations pursuant to Laser Notice No. 50, dated 2007, June 24.
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14 | Keysight | 81600B Tunable Laser Source Family - Data Sheet
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