2024年4月8日发(作者：己溪澈)
OPTICALMEASURINGINSTRUMENTS
TUNABLE LASER SOURCE
MG9637A/9638A
1500 to 1580 nm
1
For Evaluation of WDM, Optical Devices and Optical Fiber Amplifiers
GPIB
The larger transmission capacity required by multimedia applications
has seen increasing use of wavelength division multiplexing (WDM)
using optical fiber amplifiers in every field from R&D to commercial
operation. As a consequence, key WDM optical devices such as op-
tical fiber amplifiers, couplers, and isolators require even higher per-
formance and stability.
The MG9637A/9638A design meets these requirements through
excellent wavelength repeatability, achieved by self-calibration and
improved reliability using a new external cavity technology. The
MG9637A/9638A utilize an external optical automatic power control
(APC) module, the MG9637A has an Lithium Niobate modulator in
the APC section to provide excellent output power stability and S/N
ratio. The MG9638A uses a semiconductor amplifier providing a
high-power output of at least +4 dBm.
Both laser sources are ideal for evaluating the wavelength loss
characteristics and polarization mode dispersion (PMD) of optical
devices (couplers, filters, etc.), as well as the gain and noise figure
of optical fiber amplifiers and PMD used in dense wavelength divi-
sion multiplexing (DWDM) systems.
O
u
t
p
u
t
p
o
w
e
r
d
e
v
i
a
t
i
o
n
(
d
B
)
Time (min.)
Performance
•
Stable output power
The power of Output 1 of the MG9637A has been stabilized to ±0.01
dB using the APC function, permitting easy and stable wavelength
loss measurement of optical devices. In addition, the wavelength
flatness is within ±0.1 dB, enabling high-accuracy measurement of
wavelength loss without normalization of the output power of the
laser source.
W
a
v
e
l
e
n
g
t
h
d
e
v
i
a
t
i
o
n
(
p
m
)
Features
•
Single moded emission
•
1 pm wavelength setting resolution
•
±7 pm max. wavelength repeatability
•
+4 dBm or more output
•
Two output ports
•
Wavelength repeatability
The wavelength repeatability is about ±5 pm when the calibration
function (applications for patent) is used. Consequently, the full width
half maximum (FWHM) and stop-band loss characteristics of narrow
band filters can be measured with high accuracy.
Relative wavelength (nm)
For product ordering information, see pages 4-7.39
OPTICALMEASURINGINSTRUMENTS
•
Polarization maintaining fiber output
Output 1 uses a polarization-maintaining fiber to guarantee a polar-
ization extinction ratio of more than 18 dB at the output side. This is
very useful for measuring the polarization characteristics of optical
fiber amplifiers and external modulators, as well as for measurement
at a constant polarization.
•
Coherence control function
When measuring the wavelength loss characteristics of an optical
devices with a narrow linewidth, interference due to reflect from the
optical device reduces the level stability and causes ripple over
wavelength. The coherence control function broaders the linewidth
to about 50 MHz eliminating level fluctuations due to interference
and permitting accurate measurement.
Functions
•
Fast measurement of narrow-band filters
DWDM communications currently being commercialized use wave-
length multiplexing at an interval of 0.2 nm to several nm. As a con-
sequence, wavelength band pass filters for these applications re-
quire a narrow bandwidth and large loss in stop-band loss.
The MG9637A/9638A achieve improved wavelength repeatability
and high-speed sweeping using self calibration function (applications
for patent). When combined with the MS9710B Optical Spectrum
Analyzer or ML9001A Optical Power Meter, wavelength loss charac-
teristics can be measured quickly with high accuracy and a wide dy-
namic range. For example, high-speed measurement (51 points) is
possible in less than 30 seconds.
•
Wide dynamic range measurement with optical spectrum analyzer
The MG9637A/9638A can be linked with the MS9710B Optical
Spectrum Analyzer just by an RS-232C cable, with no need for an
external controller. Measurement is made simple by using the
MS9710B soft keys. Furthermore, measurement results including
transmission loss, FWHM, and stop-band loss characteristics can be
analyzed easily using the MS9710B marker, trace, and smoothing
functions.
The following screens (A, B) show examples of measurements of
a high performance filter with a center wavelength of 1540 nm.
Screen A is a FWHM measurement example: since the wavelength
repeatability is within ±7 pm, the FWHM can be measured accurate-
ly. Screen B shows a pass-band and stop-band loss characteristics
measurement example: wide dynamic range measurement of better
than 70 dB is possible by setting the MS9710B resolution bandwidth
to 0.2 nm.
A: FWHM measurement (MS9710B display)
B: Wide dynamic range measurement (MS9710B display)
Specifications
Model
Wavelength range
Wavelength setting resolution
Absolute wavelength accuracy
Wavelength stability
Wavelength repeatability
Side mode suppression ratio
*
2
Linewidth (typical value)
Wavelength switching time
(typical value)
Max. output power
Output 1
Min. setting output power
Power stability*
1
Power flatness*
3
Polarization extinction ratio
Output 2
Internal modulation
External modulation*
4
Interface
Main functions
I/O Connector
GPIB, RS-232C
Wavelength calibration, single-step sweep
Frequency control input, external modulation input, sweep signal output, sweep trigger signal output, internal modulation
sync signal output
Continued on next page
>18 dB
Output power: >–10 dBm
200 Hz to 20 kHz (square waveform), Duty: 50%
1 MHz to 3 GHz 1 to 300 MHz
1500 to 1580 nm
1 pm
<±0.1 nm
<±100 MHz/h*
1
±35 pm (80 nm range), Typical: ±7 pm (at ±3 nm, after calibration)
>45 dB (1520 to 1570 nm)
>40 dB (1500 to 1580 nm)
700 kHz (coherent control: Off), 50 MHz (coherent control: On)
100 ms/1 nm, 150 ms/10 nm, 500 ms/80 nm
>–10 dBm (1520 to 1570 nm)
>–13 dBm (1500 to 1580 nm)
<–20 dBm
<±0.01 dB/h
<±0.1 dB
>+4 dBm (1520 to 1570 nm)
>0 dBm (1510 to 1580 nm)
>–5 dBm (1500 to 1580 nm)
<–10 dBm
<±0.02 dB/h
<±0.2 dB
>40 dB (1520 to 1570 nm)
>35 dB (1500 to 1580 nm)
MG9637AMG9638A
40For product ordering information, see pages 4-7.
OPTICALMEASURINGINSTRUMENTS
Warm-up time
Laser safety
Ambient temperature
Dimensions and mass
Power supply
EMC
Safety
<1 h
FDA21-CFR: Class 1
IEC-825: Class 3A
Operation: +10˚ to +35˚C, Storage: –20˚ to +60˚C
319 (W) x 177 (H) x 450 (D) mm, ≤16 kg
AC 85 to 132/170 to 250 Vac, <190 VA
EN55011: 1991, Group 1, Class A
EN50082-1: 1992
EN61010-1: 1993 (installation Category ΙΙ, Pollution Degree ΙΙ)
1
Note: Typical values are not guaranteed.
1: 1 hour at constant temperature
2: Ratio of peak levels over the peak wavelength range ±0.5 to ±2.5 nm, measured using an optical spectrum analyzer with a wavelength resolution of 0.1 nm.
*
*
*
3: Room temperature
*
4: 10 dB down from the reference point at 10 MHz
Ordering information
Please specify model/order number, name, and quantity when ordering.
Model/Order
Main frame
MG9637ATunable Laser Source
MG9638ATunable Laser Source
Standard accessories
Optical connector adapter
*
1
: 2 pcs
J0017 Power cord, 2.5 m:1 pc
F0013 Fuse, 5 A:2 pcs
S0001 Optical output control key:2 pcs
W1213AEMG9637A/9638A operation manual:1 copy
W1214AERemote control operation manual: 1 copy
B0329GFront cover:1 pc
Options
MG9637A-27E2000 connector
*
2
MG9637A-31EC (Radial) connector*
2
MG9637A-37FC-PC connector*
2
MG9637A-38ST connector*
3
MG9637A-39DIN connector*
3
MG9637A-40SC connector*
3
MG9637A-43HMS-10/A (Diamond) connector*
3
MG9638A-27E2000 connector*
2
MG9638A-31EC (Radial) connector*
2
MG9638A-37FC-PC connector*
2
MG9638A-38ST connector*
3
MG9638A-39DIN connector*
3
MG9638A-40SC connector*
3
MG9638A-43HMS-10/A (Diamond) connector*
3
Peripheral instruments
MS9710BOptical Spectrum Analyzer
ML9001AOptical Power Meter
MA9611AOptical Sensor (for ML9001A)
MA9714BOptical Sensor (for ML9001A)
MN9610BProgrammable Optical Attenuator
MN9611B Programmable Optical Attenuator
MF9630A Optical Wavelength/Frequency Counter
Application parts
J0654ARS-232C cable, 9P-9P
J0655ARS-232C cable, 9P-25P
J0007GPIB cable, 1 m
J0617BReplaceable optical connector (FC)
J0618DReplaceable optical connector (ST)
*
4
J0618EReplaceable optical connector (DIN)
J0618FReplaceable optical connector (Diamond HMS-10/A)
J0619BReplaceable optical connector (SC)
*
4
J0635BFC • PC-FC • PC-2M-SM (FC • PC optical fiber cord,
2 m, SM)
Z0282Ferrule cleaner
Z0283
Replacement reel for ferrule cleaner (6 pcs/set, for Z0282)
Z0284Cleaner for optical adapter (stick type, 200 pcs/set)
B0335CHard carrying case
*
1: Any of the listed connector options can be fitted as standards if specified
when placing the order. If no connector types is specified in the order, FC-
PC connectors (MG9637A/9638A-37) will be fitted.
*
2: Factory option
*
3: User-replaceable type
*
4: The optical output off function is not available when no optical fiber cord is
connected to the ST or SC replaceable optical connector.
For product ordering information, see pages 41
2024年4月8日发(作者：己溪澈)
OPTICALMEASURINGINSTRUMENTS
TUNABLE LASER SOURCE
MG9637A/9638A
1500 to 1580 nm
1
For Evaluation of WDM, Optical Devices and Optical Fiber Amplifiers
GPIB
The larger transmission capacity required by multimedia applications
has seen increasing use of wavelength division multiplexing (WDM)
using optical fiber amplifiers in every field from R&D to commercial
operation. As a consequence, key WDM optical devices such as op-
tical fiber amplifiers, couplers, and isolators require even higher per-
formance and stability.
The MG9637A/9638A design meets these requirements through
excellent wavelength repeatability, achieved by self-calibration and
improved reliability using a new external cavity technology. The
MG9637A/9638A utilize an external optical automatic power control
(APC) module, the MG9637A has an Lithium Niobate modulator in
the APC section to provide excellent output power stability and S/N
ratio. The MG9638A uses a semiconductor amplifier providing a
high-power output of at least +4 dBm.
Both laser sources are ideal for evaluating the wavelength loss
characteristics and polarization mode dispersion (PMD) of optical
devices (couplers, filters, etc.), as well as the gain and noise figure
of optical fiber amplifiers and PMD used in dense wavelength divi-
sion multiplexing (DWDM) systems.
O
u
t
p
u
t
p
o
w
e
r
d
e
v
i
a
t
i
o
n
(
d
B
)
Time (min.)
Performance
•
Stable output power
The power of Output 1 of the MG9637A has been stabilized to ±0.01
dB using the APC function, permitting easy and stable wavelength
loss measurement of optical devices. In addition, the wavelength
flatness is within ±0.1 dB, enabling high-accuracy measurement of
wavelength loss without normalization of the output power of the
laser source.
W
a
v
e
l
e
n
g
t
h
d
e
v
i
a
t
i
o
n
(
p
m
)
Features
•
Single moded emission
•
1 pm wavelength setting resolution
•
±7 pm max. wavelength repeatability
•
+4 dBm or more output
•
Two output ports
•
Wavelength repeatability
The wavelength repeatability is about ±5 pm when the calibration
function (applications for patent) is used. Consequently, the full width
half maximum (FWHM) and stop-band loss characteristics of narrow
band filters can be measured with high accuracy.
Relative wavelength (nm)
For product ordering information, see pages 4-7.39
OPTICALMEASURINGINSTRUMENTS
•
Polarization maintaining fiber output
Output 1 uses a polarization-maintaining fiber to guarantee a polar-
ization extinction ratio of more than 18 dB at the output side. This is
very useful for measuring the polarization characteristics of optical
fiber amplifiers and external modulators, as well as for measurement
at a constant polarization.
•
Coherence control function
When measuring the wavelength loss characteristics of an optical
devices with a narrow linewidth, interference due to reflect from the
optical device reduces the level stability and causes ripple over
wavelength. The coherence control function broaders the linewidth
to about 50 MHz eliminating level fluctuations due to interference
and permitting accurate measurement.
Functions
•
Fast measurement of narrow-band filters
DWDM communications currently being commercialized use wave-
length multiplexing at an interval of 0.2 nm to several nm. As a con-
sequence, wavelength band pass filters for these applications re-
quire a narrow bandwidth and large loss in stop-band loss.
The MG9637A/9638A achieve improved wavelength repeatability
and high-speed sweeping using self calibration function (applications
for patent). When combined with the MS9710B Optical Spectrum
Analyzer or ML9001A Optical Power Meter, wavelength loss charac-
teristics can be measured quickly with high accuracy and a wide dy-
namic range. For example, high-speed measurement (51 points) is
possible in less than 30 seconds.
•
Wide dynamic range measurement with optical spectrum analyzer
The MG9637A/9638A can be linked with the MS9710B Optical
Spectrum Analyzer just by an RS-232C cable, with no need for an
external controller. Measurement is made simple by using the
MS9710B soft keys. Furthermore, measurement results including
transmission loss, FWHM, and stop-band loss characteristics can be
analyzed easily using the MS9710B marker, trace, and smoothing
functions.
The following screens (A, B) show examples of measurements of
a high performance filter with a center wavelength of 1540 nm.
Screen A is a FWHM measurement example: since the wavelength
repeatability is within ±7 pm, the FWHM can be measured accurate-
ly. Screen B shows a pass-band and stop-band loss characteristics
measurement example: wide dynamic range measurement of better
than 70 dB is possible by setting the MS9710B resolution bandwidth
to 0.2 nm.
A: FWHM measurement (MS9710B display)
B: Wide dynamic range measurement (MS9710B display)
Specifications
Model
Wavelength range
Wavelength setting resolution
Absolute wavelength accuracy
Wavelength stability
Wavelength repeatability
Side mode suppression ratio
*
2
Linewidth (typical value)
Wavelength switching time
(typical value)
Max. output power
Output 1
Min. setting output power
Power stability*
1
Power flatness*
3
Polarization extinction ratio
Output 2
Internal modulation
External modulation*
4
Interface
Main functions
I/O Connector
GPIB, RS-232C
Wavelength calibration, single-step sweep
Frequency control input, external modulation input, sweep signal output, sweep trigger signal output, internal modulation
sync signal output
Continued on next page
>18 dB
Output power: >–10 dBm
200 Hz to 20 kHz (square waveform), Duty: 50%
1 MHz to 3 GHz 1 to 300 MHz
1500 to 1580 nm
1 pm
<±0.1 nm
<±100 MHz/h*
1
±35 pm (80 nm range), Typical: ±7 pm (at ±3 nm, after calibration)
>45 dB (1520 to 1570 nm)
>40 dB (1500 to 1580 nm)
700 kHz (coherent control: Off), 50 MHz (coherent control: On)
100 ms/1 nm, 150 ms/10 nm, 500 ms/80 nm
>–10 dBm (1520 to 1570 nm)
>–13 dBm (1500 to 1580 nm)
<–20 dBm
<±0.01 dB/h
<±0.1 dB
>+4 dBm (1520 to 1570 nm)
>0 dBm (1510 to 1580 nm)
>–5 dBm (1500 to 1580 nm)
<–10 dBm
<±0.02 dB/h
<±0.2 dB
>40 dB (1520 to 1570 nm)
>35 dB (1500 to 1580 nm)
MG9637AMG9638A
40For product ordering information, see pages 4-7.
OPTICALMEASURINGINSTRUMENTS
Warm-up time
Laser safety
Ambient temperature
Dimensions and mass
Power supply
EMC
Safety
<1 h
FDA21-CFR: Class 1
IEC-825: Class 3A
Operation: +10˚ to +35˚C, Storage: –20˚ to +60˚C
319 (W) x 177 (H) x 450 (D) mm, ≤16 kg
AC 85 to 132/170 to 250 Vac, <190 VA
EN55011: 1991, Group 1, Class A
EN50082-1: 1992
EN61010-1: 1993 (installation Category ΙΙ, Pollution Degree ΙΙ)
1
Note: Typical values are not guaranteed.
1: 1 hour at constant temperature
2: Ratio of peak levels over the peak wavelength range ±0.5 to ±2.5 nm, measured using an optical spectrum analyzer with a wavelength resolution of 0.1 nm.
*
*
*
3: Room temperature
*
4: 10 dB down from the reference point at 10 MHz
Ordering information
Please specify model/order number, name, and quantity when ordering.
Model/Order
Main frame
MG9637ATunable Laser Source
MG9638ATunable Laser Source
Standard accessories
Optical connector adapter
*
1
: 2 pcs
J0017 Power cord, 2.5 m:1 pc
F0013 Fuse, 5 A:2 pcs
S0001 Optical output control key:2 pcs
W1213AEMG9637A/9638A operation manual:1 copy
W1214AERemote control operation manual: 1 copy
B0329GFront cover:1 pc
Options
MG9637A-27E2000 connector
*
2
MG9637A-31EC (Radial) connector*
2
MG9637A-37FC-PC connector*
2
MG9637A-38ST connector*
3
MG9637A-39DIN connector*
3
MG9637A-40SC connector*
3
MG9637A-43HMS-10/A (Diamond) connector*
3
MG9638A-27E2000 connector*
2
MG9638A-31EC (Radial) connector*
2
MG9638A-37FC-PC connector*
2
MG9638A-38ST connector*
3
MG9638A-39DIN connector*
3
MG9638A-40SC connector*
3
MG9638A-43HMS-10/A (Diamond) connector*
3
Peripheral instruments
MS9710BOptical Spectrum Analyzer
ML9001AOptical Power Meter
MA9611AOptical Sensor (for ML9001A)
MA9714BOptical Sensor (for ML9001A)
MN9610BProgrammable Optical Attenuator
MN9611B Programmable Optical Attenuator
MF9630A Optical Wavelength/Frequency Counter
Application parts
J0654ARS-232C cable, 9P-9P
J0655ARS-232C cable, 9P-25P
J0007GPIB cable, 1 m
J0617BReplaceable optical connector (FC)
J0618DReplaceable optical connector (ST)
*
4
J0618EReplaceable optical connector (DIN)
J0618FReplaceable optical connector (Diamond HMS-10/A)
J0619BReplaceable optical connector (SC)
*
4
J0635BFC • PC-FC • PC-2M-SM (FC • PC optical fiber cord,
2 m, SM)
Z0282Ferrule cleaner
Z0283
Replacement reel for ferrule cleaner (6 pcs/set, for Z0282)
Z0284Cleaner for optical adapter (stick type, 200 pcs/set)
B0335CHard carrying case
*
1: Any of the listed connector options can be fitted as standards if specified
when placing the order. If no connector types is specified in the order, FC-
PC connectors (MG9637A/9638A-37) will be fitted.
*
2: Factory option
*
3: User-replaceable type
*
4: The optical output off function is not available when no optical fiber cord is
connected to the ST or SC replaceable optical connector.
For product ordering information, see pages 41