LUXMUX Single-SLED ISB1 User manual

Document #LUX-Single-SLED_V2_ISB1-UM-2021_01_01 ©2020
User Manual
Single Channel Superluminescent Diode Light Source (Single-SLED)
Integrated Spectral Bench (ISB1)

2
Company Mission
To establish lasting relationships with our clients by providing reliable products,
exceptional customer service, and ongoing support. Everyone at Luxmux is part of our
continuous improvement culture.
Company Vision
To illuminate the solutions that photonics can provide through continuous innovation
of our own products and technology.
Quality Policy
At Luxmux we use only the highest-quality components, manufactured consistently to
our stringent specifications. After assembly, we test each system in-house before it is
carefully packaged and shipped to customers. We ensure our customers receive well-
built and thoroughly inspected products.
The Single-SLED product line is tested to comply with the Telcordia reliability standards.
Contact Support
For any issues related to technical support or service, please contact:
[e-mail]

3
Table of Contents
1. Description...........................................................................................................................................................4
2. Safety...................................................................................................................................................................5
3. Operation.............................................................................................................................................................6
3.1 Parts List ........................................................................................................................................................6
3.2 Physical Driver Functionality .............................................................................................................................7
3.3 Hardware Requirements .............................................................................................................................12
3.4 Software Operation.....................................................................................................................................12
4. Application Protocol Interface (API)..................................................................................................................23
4.1 Serial MODBUS-RTU (USB interface/RS232) ...............................................................................................23
4.2 MODBUS-TCP/IP (Ethernet interface) .........................................................................................................24
4.3 Single-SLED ISB1 Register Map....................................................................................................................24
5. Fiber Coupling....................................................................................................................................................25
6. Technical Data ...................................................................................................................................................26
7. Dimensions ........................................................................................................................................................28
7.1 Dimensions –Single-SLED Standard............................................................................................................28
7.2 Dimensions –Single-SLED Standard with Power Meter..............................................................................29
7.3 Dimensions –Single-SLED Low DOP ............................................................................................................30
7.4 Dimensions –Single-SLED Low DOP with Power Meter..............................................................................31
8. Troubleshooting ................................................................................................................................................32
9. Limited Product Warranty (“WRTY”).................................................................................................................33
10. Compliance......................................................................................................................................................35
11. Acronyms.........................................................................................................................................................35
12. Ordering Code .................................................................................................................................................36
12.1 Standard Single-SLED models........................................................................................................................36
12.2 Optional: Light Output Connector.................................................................................................................37
12.3 Optional: Power Meter..................................................................................................................................37
13. Contact Information ........................................................................................................................................37

4
1. Description
The Single-SLED Integrated Spectral Bench (ISB1) product is a compact
Superluminescent Diode (SLED) solution that employs Luxmux’s high-performance
Optical Spectral Engine (OSE1) module. The ISB1 series consists of various multiple SLED
configurations; refer to “Section 12. Ordering Code.” The ISB1 is a broadband light
source that operates in the near infrared range. It is a turn-key product that can easily
be integrated into existing devices that require light power.
The Single-SLED ISB1 includes an integrated isolator and a proprietary driver and
controller, each of which enable the light power to easily be adjusted. A Graphical User
Interface (GUI) with a USB, RS232 or Ethernet connection allows for external monitoring
and adjustment capabilities.
The Single-SLED ISB1’s light output is powered by a standard FC/APC connector (FC/PC
or SMA available upon request). The central wavelength of the light-output ranges from
1300nm to 1680nm, thereby delivering high-power densities across the spectral range
of the SLED.
Features
-User-controlled box with one SLED enclosed
-Compact and user-friendly
-Centre wavelength (CW) options: 1300nm, 1340nm, 1390nm, 1430nm, 1480nm,
1550nm, 1615nm, and 1680nm
-SLED can be run from 0% to 100% of maximum rating
-Output power on fiber-coupled models: 6mW-13mW
-Output power on free-space models: 10mW-25mW
-Bandwidth FWHM: 40nm-60nm
-Internally optimized for maximum coupling efficiency with PM1550-XP Fiber or
PM1300-XP
-Monolithic integration of a broadband dual stage PMF isolator (35dB)
-Includes a monitor photodiode
-Light output connector: FC/APC (optional: FC/PC or SMA)
-Multiple communication interfaces: USB, RS-232, Ethernet
-Low Degree of Polarization (DOP) outputs available
-User-friendly GUI and custom API available for test automation
-Optional power meter available

5
2. Safety
All statements regarding safety of operation and technical data in this user manual will
only apply when the unit is operated correctly.
The driver must not be operated in environments susceptible to explosion
hazards.
Do not obstruct the air ventilation slots.
If any parts of the driver, or electronics are broken or exposed, contact Luxmux
technical support and do not attempt to operate the unit.
The ISB1 is a Class 1M laser product. It is safe for all conditions of use except when
passed through magnifying optics such as microscopes and telescopes. It
produces a beam that is divergent. If light is re-focused use protective eye wear.

6
3. Operation
3.1 Parts List
Inspect the shipping container for damage. If the shipping container seems to be
damaged, keep it until you have inspected the contents and the unit mechanically and
electrically.
Verify that you have received the following items within the package:
1 Single-SLED Integrated Spectral Bench
1 Power supply. Input: AC 100-240V Output: 12V
1 Power Cord
1 USB 2.0 A to B Cable
1 User Manual
1 Single-SLED ISB1 Final Inspection Test Report

7
3.2 Physical Driver Functionality
Side Panel - Power:
The power side panel consists of the 12V power jack and a two-position power switch
to turn the unit ON/OFF as shown Figure 1. An optional power meter is available for the
Single-SLED.
Figure 1: Power Side Panel
When the unit is plugged in for power and the power button is in the “I” (ON) position,
the power LED of the front panel will light up.
The ISB1 can be powered up with the power supply provided by Luxmux or with User’s
power supply if it fits the following specifications:
1. 12VDC (max. 14VDC) and minimum 3A current supply capability
2. Power Barrel Connector Jack 2.00mm ID, 5.50mm OD, 9.5 mm Length.
3. Center Positive

8
Side Panel –Communications and Control:
The right-side panel consists of a USB Type B connector, Ethernet and RS232 for
communication and a 7-position slide type switch module; see Figure 2.
The left-most switch controls whether the driver will be operated in MANUAL MODE or
PC MODE. The right-most switch enables the SLED to be turned on and off.
If the driver is controlled through the PC based software or Luxmux’s API, connect either
a USB, a Serial and/or Ethernet cable for communication. In MANUAL MODE, no
connection to USB, RS232 or Ethernet is required and the SLED can be turned ON/OFF
with the SLED source control.
When turning the SLED “on” or “off” in MANUAL MODE it will be driven at its default
current settings. Default current settings for MANUAL MODE can be changed through
the software and will be explained in the Software Operation section.
When running the Luxmux software, toggle the left switch to PC MODE in order to
control the SLED from the software. The SLED control will be disabled in the software if
operating in MANUAL MODE. Software will still display current levels when running in
MANUAL MODE but users will not be able to adjust the operating currents.
Figure 2: Communications and Control Panel

9
Front Panel - Light Output:
The front panel includes three LEDs, vent holes and light output connector, allowing
users to connect their own fiber optic cable to the ISB1; see Figure 3. The Single-SLED
comes with FC/APC as standard, but FC/PC and SMA connectors are available upon
customer request.
When the unit is plugged in for power and the power button (side panel) is in the “I”
position the red “POWER” LED will light up.
The yellow “READY” LED will start blinking until the unit is ready for operation. When
the yellow “READY” LED stops blinking and stays on, the SLED is enabled and users can
turn it on. When the SLED is turned on and light is being emitted the green “ON” LED
will light up.
If the ISB1 is controlled through the Luxmux software, the SLED control will be disabled
until the unit is ready, as explained in the Software Operation section.
Otherwise, in MANUAL MODE or Luxmux’s API, if the user turns on the SLED before the
unit is ready, the unit will not emit light until the “READY” stops blinking. Once the yellow
“READY” is on the ISB1 will allow for the SLED to start emitting light.
In the event of a fast and large temperature change in the environment, the unit may
stop emitting light until the Single-SLED is ready again, in such case, the yellow “READY”
LED will start blinking.
Figure 3: Front Panel –Light Output

10
Back Panel - Thermal Management:
Free air circulation around the rear of the unit should be maintained for good thermal
performance. If the ISB1 is operated in environments over 35 Degrees Celsius the ISB1
should be mounted to an external heatsink. Free air circulation around the ISB1 is
required when it is used without a heatsink. A minimum of 0.5”clearance is
recommended for free air circulation around the top and sides of the ISB1 Unit.
Air circulation is located on the back panel of the ISB1 Light Source, while additional
ventilation holes are located in the front panel. Ensure vents are not obstructed to allow
for maximum air flow.
The back panel includes two fans as shown in Figure 4. Upon powering up the unit, each
fan is regulated automatically to its maximum speed. Users do have the option,
however, to control fan speed manually as explained in the Software Operation section.
If the fan is not working and the heat sink temperature goes over 60˚C, turn the unit off
and contact Luxmux technical support.
Figure 4: Back Panel –Thermal Management

11
Power Meter (Only in models ordered with Power Meter)
The power meter adapters can come with FC/APC, FC/PC or SMA connectors. Connector
style must be specified when placing an order. If the ISB1 is controlled through the
Luxmux software, current and power is displayed in the UI as explained in the Software
Operation section. Otherwise, if using Luxmux’s API, use the responsivity curve shown
in Figure 5 to convert photodiode current to optical power.
Figure 5: Power Meter Responsivity Curve

12
3.3 Hardware Requirements
CPU: 1 GHz or higher
RAM: 256 MB
Hard disc with at least 100 MB free storage space
USB 2.0 port
USB cable according the USB 2.0 specification
The driver is compatible with the following operating systems.
−Windows ® 7 (32-bit, 64-bit)
−Windows ® 8 (32-bit, 64-bit)
−Windows ® 10 (32-bit, 64-bit)
3.4 Software Operation
When starting up, the software will automatically scan your computer’s ports and find
the Single-SLED ISB1. Please wait until a connection is established and the status bar on
the bottom right shows your connection type (USB/RS-232/Ethernet). Figure 6 shows
the main console of the software.
Figure 6: Main Console of Luxmux Single-SLED ISB1 Driver

13
SLED Control:
There is one slider bar to adjust the current of the SLED; see Figure 7.
Based on the ISB1 model, the maximum current of the SLED will be limited and the slider
maximum value will be adjusted accordingly when the Single-SLED ISB1 is connected.
The center wavelength will be displayed.
Figure 7: SLED Control Section
The SLED current can be adjusted using the sliding bar. Additionally, the SLED can be set
to the Maximum or Minimum by clicking the “Set Max” or “Set Min” buttons on the left
of the slider. The user can also manually type the desired set current by typing a desired
value in the SLED Current box underneath the sliding bar.
When the unit is turned on, the SLED Control will be disabled, inhibiting the user from
moving the sliders or setting the current until the SLED Power is turned on. If the
temperature of the units goes over 32ᵒC, the SLED will be turned off automatically.
The Actual Current is sensed and displayed. The box below the Actual Current shows the
monitor photodiode current. The monitor photodiode is physically placed on the back
facet of the SLED, inside the Single-SLED 14-pin Package Optical Spectral Engine, and can

14
be used as a reference for the light the SLED is emitting. Note that monitor diode value
will vary depending on the SLED operating current.
By default, Modulation will be Off. However, the user can enable Modulation by clicking
the “Modulation”button in the bottom right of the main console to open Modulation
Settings. With the Modulation Settings window open, the user may then enable
modulation by setting “Enable Modulation” to “ON”. Note that the SLED power must
first to be set to “ON” in order to open the Modulation window. Once Modulation is
enabled, the user Can enable modulation for the SLED. Note that if the SLED modulation
setting is in the “OFF” position, no current will be sent to the SLED even if modulation
mode is enabled. Maximum Modulation Current is displayed, and is dictated by the SLED
current setting in the Main Window. Note that once Modulation is enabled, this current
setting is not variable, and the user must disable modulation in order to change it.
The Modulation Frequency has a default of 1kHz with a 50% Duty Cycle. Modulation
frequency and/or Duty Cycle can be altered by the user by typing in the desired value
and clicking the “Change” button next to the desired text field. Modulation is specified
in Hz while Duty Cycle is specified as a percentage.
Figure 8: Modulation Settings Window

15
Thermoelectric Cooler (TEC) Controls:
The SLED TEC is used to control the bench temperature of the SLED. The TEC is turned
ON/OFF by toggling the enable button. Note that if a user turns the SLED TEC off, the
driver will automatically turn off the SLED to avoid overheating and damage.
Users can set their desired TEC temperature by clicking the “Save”button beside the
“Set Point”box; see Figure 9. Factory default recommended value is 21˚C. The real-time
TEC temperatures are shown in the “Temp Read”box and TEC Current is shown in the
“Current Read”box. TEC Capacity represents how hard the TEC is working to maintain
the temperature of the SLED. At 100% capacity, the TEC is working at its maximum
capacity to maintain this temperature.
Figure 9: TEC Controls Section
Fan Controls
Factory default settings will automatically control the air flow. When the unit is
powered on, fan speed will default to its maximum value. Realtime fan speed is read
from the unit and displayed in the fan speed “Reading” box.
To change the fan speed, the user may type a desired fan speed value (0.0 to 7.0 CFM)
into the fan speed “Set Point” field, then click the “Set” Button.
Note: The user-defined fan speed Set Point will not be saved when the unit is powered
off. It is recommended to run the unit only at factory default fan speed.

16
Power Meter (Only in models ordered with a Power Meter)
The Power Meter Section shown in Figure 10 will only be enabled if the Single-SLED ISB1
has a Power Meter, otherwise “Start”, “Stop” and “Clear” buttons will be disabled.
Figure 10: Power Meter Section
By clicking “Start” the program will start plotting Current vs. Time. If logging is enabled,
these values will be logged in the logfile. Graph space can be cleared at any time without
losing the data on the logfile by clicking “Clear”. By clicking “Stop,” the power meter will
stop graphing. Clicking start again will restart graphing at the time it is clicked.
Based on the current measured by the Photodiode and the wavelength set by the user,
the software will calculate and plot the optical power or current based on the selected
parameter. To see the responsivity curve used to convert photodiode current to optical

17
power, click on “Resp. Curve”. Users can set the wavelength by typing the new value
and clicking the “Set” button beside the wavelength value box.
To see the current output (in mA) select “Current” in the dropdown menu. (Current will
be shown by default.)
To see the Power output, select “Power” from the dropdown menu. Power may be
viewed in terms of mW or dBm. To view the graph in the desired unit, click the relevant
button in the dropdown menu.
By clicking the “Export” button, the user can choose to select the data as a csv file or as
an image.
Communications:
The screen shown in Figure 11 will appear when clicking on the “Communications”
button from the main console. When software loads up, the Auto-Scan function will run
to find the virtual com port settings for a USB, RS232 and/or Ethernet connection. Users
can manually enter the communication settings by clicking on “Autoscanning…” to stop
the Auto-scan, then clicking “Manual Connect” to connect via their preferred
communications settings. To Disconnect from a Manual Connection, click the
“Disconnect” button.
USB/RS-232 Serial Configuration:
1. COM Port can be found on device manager
2. COM Speed should always be set to a 115200 Baud Rate
3. MODBUS ID is the unique identifier for the ISB1. It will be 1 by factory default.
Multiple ISB1 Modules can be set up and used with different Modbus ID’s. To
change Modbus ID, enter the new ID into the “Modbus ID”field before attempting
to connect.

18
Figure 11: Communications Window
Ethernet TCP Configuration:
1. IP Address will be 192.168.0.1 by factory default.
2. Subnet will be 255.255.255.0 by factory default.
3. Port is 502 by factory default.
The data transfer is represented on the right-hand side of the screen as TX (data send)
and RX (data receive) messages, accompanied by their time-stamps. This is the raw data
sent and received from the software to your Single-SLED unit, and is used to monitor
communications.
The Communications log can be paused by clicking “Pause,” exported to a file by clicking
“Save to Clipboard,” or the window can be emptied by clicking “Clear.”
In an event of a communication error, send the communication log to Luxmux technical
support at [e-mail].

19
Logging:
The Single-SLED ISB1 supports continuous logging of data such as the currents,
temperatures, fan flow, etc. by clicking on the “Logging”tab from the main console.
The window shown in Figure 12 will open. A new file can be created by clicking the
“Create New Log File” button or the data can be appended to an existing file with the
button “Selecting Existing File”. After the filename and path have been selected, to
start logging, the logging will start automatically and the “Start Logging” button will
change to “Stop Logging”. To stop the logging click on “Stop Logging”. To Resume
Logging to same file click “Start Logging”
Note: Existing Log Files must use the .csv (Comma Separated Value) file extension.
Figure 12: Data Logging Window

20
Set Defaults:
Clicking the “Set Defaults”tab from the main window will bring up the window displayed
in Figure 13. For each of the parameters it displays the Existing Setting (First box from
the left) and the Manufacturer Default Setting (Second box).
In order to change the value of any parameter, users must type the new value into the
“New Setting” text field, then click the “Save” button next to this new value. Clicking this
button will store the new value recorded in the “New Setting” field as its new default
start-up setting. The new value will be stored in the Single-SLED ISB1, and not on the
user’s computer, so if the unit is powered off and taken to a different work station, the
new settings will be kept as the default values when the unit is powered on again. The
New Settings will remain stored in the driver until a different New Setting is saved, or
“Reset to Factory Defaults” is clicked, which will reset all of these settings to their
Factory Default Values.
Figure 13: Set Defaults Window