Yenista Optics Tunics Plus How to use

Tunics_Quick_Starting_Guide_2010-2510
Quick Starting Guide
Tunics Plus
Tunics Purity
Tunics T100S
Tunable laser source
Unpacking and inspection
The Yenista Tunics Plus, Tunics Purity or Tunics T100
package consists of:
The Tunics laser
A set of keys
A printed user manual
A FC/APC to FC/PC optical patchcord
An electrical outlet
Before You Start
Please note that the TUNICS lasers are a Class IIIb products (21 CFR Subchapter J)
equipped with a Remote Interlock connector (See the Auxiliary Inputs and Outputs section
of the user manual).
The laser sources are classified as class 1M according to
IEC 60825-1 (2001).
Getting started
Turn on the Tunics unit:
1. Make sure the key-lock switch on the front panel is in the Standby position.
2. Set the rear panel MAINS switch to ON (I).
3. Turn the front panel key to the right and set it to ON. During the initialization
routine, the message “Initializing...” is displayed.
4. The message “Referencing…” is then displayed to indicate that the system
performs its self-calibration (internal wavelength referencing). This message
clears once the laser is initialized and ready for operation.
5. Once the initialization routine is complete, the laser output is ready to enable.
The message “Disabled” is displayed.
6. The cavity laser is tuned automatically on its central emission wavelength
(depending on the model). The wavelength is displayed in the top window of
the DATA area (see Figure 1).

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Connect the optical patchcord to the Tunics:
Clean the optical patchcord connector ends and connect it between the output port
of the Tunics and the input port of your device under test. The Tunics must receive
the FC/APC end.
Note: when you control the cleanness of your connector ends take care that the laser is
disable or your optical patchcord not connected yet to the Tunics source.
Figure 1: Tunics Front Panel
Set a Wavelength
Set the wavelength:
1. Press the , f function key in the MODE area (see Figure 1).
2. Enter the new value using the numeric keypad or modify knob.
3. Press the Enter key in the SETUP area (see Figure 1).
4. Press the Enable key in the DATA area to enables the optical output (see
Figure 1).
Note: You may also increase or decrease the wavelength by pressing the arrow
keys in the SETUP area, which has the same effect as rotating the modify knob.
Set an optical output Power
Set the optical output power:
1. Press the P function key in the MODE area (see Figure 1).
2. Enter the new value using the numeric keypad or modify knob:
10 mW for a Tunics Plus (possible range: 0.2 mW<P<10 mW)
2 mW for a Tunics Purity (possible range: 0.2 mW<P<2 mW)
Note: It is possible that the required output power cannot be reached even at the
maximum allowable current. If this occurs, Tunics automatically limits the current to its
maximum value and the message “Lim” appears at the right end of the displayed power.
3. Press the Enter key in the SETUP area (see Figure 1).
4. Press the Enable key in the DATA area to enables the optical output (see
Figure 1).
Wavelength displayed here
Power displayed here
Diode current displayed here

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Perform a Step-By-Step Wavelength Scanning
Wavelength scanning enables the Tunics tunable laser to broadcast on a different
wavelength at each time interval. Starting from the first wavelength (lower wavelength limit
set by the user), the emission wavelength increases incrementally (the wavelength
increment is stored in the Step parameter and set by the user) up to the last wavelength
value (upper wavelength limit set by the user). During each scan interval, the TUNICS
laser broadcast at a set wavelength for the duration specified by the Pause Timer
parameter (Pause Timer set by the user).
1. Press the P function key in the MODE area (see Figure 1).
2. Enter a optical output power using the numeric keypad or modify knob.
3. Press the Enter key in the SETUP area (see Figure 1).
4. Press 2nd + STEP to activate the scan mode.
Result: You are prompted to enter the lower wavelength scan limit while the current
setting is displayed.
5. Enter the lower wavelength scan limit and press Enter.
Result: You are prompted to enter the upper wavelength scan limit while the current
setting is displayed.
6. Enter the upper wavelength scan limit and press Enter.
Result: You are prompted to enter the scan STEP while the current setting is
displayed.
7. Enter the scan STEP and press Enter.
Result: You are prompted to enter the Pause Timer between two scan steps while
the current setting is displayed.
8. Enter the Pause Timer and press Enter. Possible values for Pause Timer
range from 0.1 to 25 seconds.
Result: Scanning begins.
9. To suspend the current wavelength scan, press the STEP key. You are then
prompted to “stop scan 1/0?”. To stop the scan press the numeric keys 1 +
Enter.
Note: Scanning stops and the emission wavelength remains set to the value applied at the time
the scan was suspended. To resume scanning, press numeric keys 0 + Enter.
The wavelength scanning process repeats continuously until user presses the STEP key to
suspend or stop the scan.
Operating parameters cannot be changed while the wavelength scanning is in progress. Therefore,
make sure the power output level you set can be achieved within the maximum current limits over
the entire scanning range. If the desired power output cannot be reached due to current limitations,
the Lim message is displayed to indicate the system no longer operates at constant power.

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Perform a Continuous Wavelength Sweep (Mode Hop Free)
Note: This feature is not available on Tunics Purity.
Tunics Plus or Tunics T100S allows you to perform truly continuous mode-hop-free scans
in swept mode over the entire operational wavelength range:
1. Press the P function key in the MODE area (see Figure 1).
2. Enter an optical output power using the numeric keypad or modify knob.
3. Press the Enter key in the SETUP area (see Figure 1).
4. Press 2nd + STEP to activate the sweep mode.
Result: You are prompted to enter the lower wavelength scan limit while the current
setting is displayed.
5. Enter the lower wavelength scan limit and press Enter.
Result: You are prompted to enter the upper wavelength scan limit while the current
setting is displayed.
6. Enter the upper wavelength scan limit and press Enter.
Result: You are prompted to enter the scan STEP while the current setting is displayed.
7. When prompted, enter “0” as scan STEP parameter, and press Enter.
8. When prompted, enter the PAUSE TIMER parameter, and press Enter.
The PAUSE TIMER is the dwell time at the upper wavelength of the sweep range
before the Tunics Plus tunable laser returns to the lower wavelength to restart a
new sweep cycle. Possible values for Pause Timer range from 0.1 to 25 seconds.
Result: The wavelength sweep (hop-free) is activated. Sweep begins.
9. To suspend the current wavelength sweep, press the STEP key. You are then
prompted to “stop scan 1/0?”. To stop the scan press the numeric keys 1 +
Enter.
Note: Sweep stops and the emission wavelength remains set to the value applied at the time the
scan was suspended. To resume scanning, press numeric keys 0 + Enter. The wavelength
sweeping process repeats continuously until user presses the STEP key to suspend or stop the
sweep.
The wavelength scanning process repeats continuously until user presses the STEP key to
suspend or stop the scan.
Operating parameters cannot be changed while the wavelength scanning is in progress. Therefore,
make sure the power output level you set can be achieved within the maximum current limits over
the entire scanning range. If the desired power output cannot be reached due to current limitations,
the Lim message is displayed to indicate the system no longer operates at constant power.

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Perform a self-calibration
In addition to the self-calibration performed at start-up only, user can instruct the system
to perform a new auto-calibration at any time.
1. Press the key the 2nd + Icombination to start auto-calibration. The Tunics
performs its internal referencing routine and the message “Referencing…” is
displayed
2. After calibration is complete, TUNICS restores the initial wavelength value in
effect at the time auto-calibration was performed.
Change the tunable speed
By default, the tunable speed of the Tunics laser is set to 100 nm/s, user can decide to
reduce this speed.
1. Press 2nd + , f to display the current sweep speed setting.
2. Enter the new sweep speed directly in “nm/s” unit and press Enter to confirm
the change.
Note: The sweeping speed is user-selectable within the speed range of 1 to 100 nm/s.
You may choose any value of speed within this range. However, operational speeds that
the motor can move are: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 20, 22, 25,
29, 33, 40, 50, 67, 100] (nm/s). Therefore, the speed you select is rounded-up to nearest
value of operational speed.
Change the GPIB address
The default value for the GPIB address is 10, user can decide to change it:
1. Press 2nd + Remote to display the current GPIB address.
2. Enter the new GPIB address and press Enter to confirm the change.
Result: You are then prompted to activate/deactivate the RS-232 remote Mode,
press Enter.
More Info
Please consult the printed user’s manual.
Do not hesitate to contact Yenista’s technical support at: tech[email protected]