Solid-State Variable Fiber Optical Time Delay(SSOTD)

Solid-State Variable Fiber Optical Time Delay(SSOTD)
The SSOTD Series Photonic Time Delay provides a variable time delay over a long range up to the millisecond. This is accomplished by selectively  routing optical signals through N fiber segments whose lengths increase successively by a power of 2. Since each switching element allows the signal to either connect or bypass a fiber segment, a delay T may be inserted, which can take any value (in increments of DT) up to the maximum value T. This is achieved using  non-mechanical configuration and activated via an electrical control signal. Latching operation preserves the selected optical path after the drive signal has been removed. The solid-state configuration eliminates the need for mechanical movement and organic materials.
The device is designed to meet the most demanding switching requirements of ultrahigh reliability and fast response time.
  • Features
  1. 4-Bit Resolution or more
  2. High Speed
  3. Non-Mechanical
  4. High Reliability
  5. Fail-Safe Latching
  6. Low Insertion Loss
  7. Low Power Consumption
  • Applications
  1. Phase-Array Antennas
  2. Instrumentation
 
  • Specifications
Parameters Unit SSOTD
wavelength nm 1520~1580,1280~1340
Insertion Loss* dB Typ: 0.8 Max:1.5
Return Loss dB >55
Crosstalk dB >30
Switch Time     us <150
Repetition Rate KHz 1
Switch Type   Latching
Polarization Dependent Loss  dB 0.25
Fiber Segment Number  Loop <8
Polarization Mode Dispersion  ps 0.15
Polarization Extinction Ratio(PM Fiber) dB >22
Operation Temperature ℃ -5～+70
Storage Temperature ℃ -40～+85
Weight g 25
Dimension mm (L)46.8×(W)17×(H)9.5(±0.2) (4Bit)
(L)74.5×(W)17×(H)9.5(±0.2) (8Bit)
*:Loss of each group of bits          
 
  • Electrical parameters
Parameters Min. Typical Max. Unit
Switch Voltage 2.3 2.5 3.3 V
Switch Current 140 150 160 mA
Pulse Duration 0.2 0.3 0.5 ms
 
  • Pins 4Bit
Switch Position Pin Group 1 Pin Group 2 Pin Group 3 Pin Group 4 Pin Group 5
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10
Bypass + - - + - + - + + -
1-bit - + + - - + - + + -
2-bit + - + - + - - + + -
3-bit + - - + + - + - + -
4-bit + - - + - + + - - +

Dimension  (mm)  4Bit






 
  • Pins 8Bit
 
Switch Position Pin Group 1 Pin Group 2 Pin Group 3 Pin Group 4 Pin Group 5 Pin Group 6 Pin Group 7 Pin Group 8 Pin Group 9
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 15 Pin 16 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 Pin 17 Pin 18
Bypass + - - + - + - + - + - + - + - + + -
1-bit - + + - - + - + - + - + - + - + + -
2-bit + - + - + - - + - + - + - + - + + -
3-bit + - - + + - + - - + - + - + - + + -
4-bit + - - + - + + - + - - + - + - + + -
5-bit + - - + - + - + + - + - - + - + + -
6-bit + - - + - + - + - + + - + - - + + -
7-bit + - - + - + - + - + - + + - + - + -
8-bit + - - + - + - + - + - + - + + - - +
 
  • Dimension  (mm)  8Bit






 
  • Ordering Information: SSOTD－A－B－C－D－E－F
A B C D E F
Mode Wavelength Fiber Type Fiber Diameter Fiber Length Connector
04:4-Bit
05:5-Bit
06:6-Bit
07:7-Bit
08:8-Bit		 13: 1310nm
15: 1550nm 		SM09:SMF-28  
PM13:PM1310
PM15:PM1550		 25:250um
90:900um 		05:0.5m
10:1.0m
15:1.5m 		OO:None
FP: FC/PC
FA: FC/APC
SP: SC/PC
SA: SC/APC
LP: LC/PC
LA: LC/APC

 

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