PSW-LN-0.1
Low Frequencies Polarization Switch
The PSW-LN-0.1 Polarization Switch is an integrated optics waveguide device that switches the polarization state of an input light between two linear orthogonal output states at frequencies up to 200 MHz.
The PSW-LN-0.1 Polarization Switch is based on a birefringent LiNbO3 phase modulator whose waveguide is illuminated at 45 ° of its main axis. The input state of polarization (SOP) is thus split up in two orthogonal TE and TM polarization states. When a RF modulation signal is applied via the control electrodes, an optical path difference between the TE and TM components is produced, resulting in a new state of polarization (SOP) for the output light.
The PSW-LN Polarization Switch acts as a waveplate with user adjustable delay. When a modulation signal with properly selected peak levels is applied to the modulator, the input linear polarized light is exiting either in an unchanged direction, or rotated by 90°. The two directions are matched with the main axis of the optical output PM fiber and the PSW-LN thus operates as a slow/fast axis switch.
Ultimately, the phase modulation signal can be adjusted to provide a highly linear SOP on either axis of the output fiber. This polarization rotation provides an efficient solution for high speed Polarization Switching.
FEATURES
• Low insertion loss
• Very low swiching voltage
• Low differential group delay
• Compact design
APPLICATIONS
• Polarization shift keying (PSK)
• High-speed test equipment
OPTIONS
• 1300 nm band versions
• Choice of optical connectors
• Chip on sub-mount
MATCHING COMPONENT
• DR-PL-0.1 RF driver
PSW-LN-0.1 Performance Highlights
Parameter
Min
Typ
Max
Unit
Operating wavelength
1530
-
1580
nm
Insertion loss
-
3.5
4
dB
Electro-optical bandwidth
150
200
-
MHz
Switching voltage @50 kHz
-
6
7
V
Specifications given at 25 °C, 1550 nm
Electrical Characteristics
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Electro-optic bandwidth
S21
RF electrodes
100
200
-
MHz
Switching voltage @50 kHz
V50 kHz
RF electrodes
-
6
7
V
Switching voltage @150 MHz
V150 MHz
RF electrodes
-
8
9
V
RF input impedance
Zin-RF
-
-
10 000
-
W
Optical Characteristics
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Crystal
-
-
Lithium Niobate X-Cut Y-Prop
Operating wavelength
l
-
1530
1550
1580
nm
Insertion loss
IL
Without connectors
-
3.5
4
dB
Polarization dependent loss
PDL
-
-
-
1
dB
Polarization extinction ratio
PER
-
18
20
-
dB
Optical return loss
ORL
-
-40
-45
-
dB
All specifications given at 25 °C, 1550 nm, unless differently specified.
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter
Symbol
Min
Max
Unit
Modulation voltage range
EVin
-20
+20
V
Optical input power
OPin
-
20
dBm
Operating temperature
OT
0
+70
°C
Storage temperature
ST
-40
+85
°C
Mechanical Diagram and pinout
All measurements in mm
Port
Function
Note
IN
Optical input port
Polarization maintaining 1550 nm
Corning PM 15-U25D length: 1.5 meter, buffer diameter: 900 mm
OUT
Optical output port
Polarization maintaining 1550 nm
Corning PM 15-U25D length: 1.5 meter, buffer diameter: 900 mm
RF
RF input port
Wiltron female K (SMA compatible)
Ordering information
PSW-LN-0.1-P-P-AB-CD
P = Input fiber : P Polarisation maintaining
P = Output fiber : P Polarisation maintaining
AB = Input connector : 00 bare fiber FA FC/APC FC FC/UPC CD = Output connector : 00 bare fiber FA FC/APC FC FC/UPC
商品属性 [操作波长] 1530-1580nm