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TUNABLE OPTICAL FILTERS

The Tunable Optical Filter is based on MEMS technology and is designed for ITU O, C and L band with 50 GHz or 100 GHz channel spacing. The highly reliable tuning mechanism uses an integrated micro-mirror to select the central wavelength of the filter. Switching time is below 50 ms, insertion loss is below 3 dB and full width half maximum can be either 0.3nm or 0.5nm.

The miniature package withstands rugged environments and the optical engine is optimized for lowest size (it only measures 14.6 x 11.2 x 9.1 mm) and is well suited for direct mounting on printed circuit boards. An interface board with UART and I2C/SMBus is also available.

Applications range from simple hand held spectrometers to reconfigurable optical add/drop multiplexers.

#FEATURESAPPLICATIONS
1 • Small 43 x 11 x 9.5 mm3 body size • Re-configurable optical add/drop multiplexers
2 • Low insertion loss • Optical sensor interrogators
3 • Also available with UART and I2C/SMBus interface board • Optical power monitors
4 • Low cost spectrometers
5 • Telecom Network
6 • Sensor Network

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DESCRIPTION

Sercalo’s Tunable Optical Filter is based on MEMS technology and is designed for ITU O, C and L band with 50 GHz or 100 GHz channel spacing. The highly reliable tuning mechanism uses an integrated micro-mirror with switching time below 50 ms and insertion loss below 3 dB.

The bare Tunable Filter component (BCTF variant) measures only 43 x 11 x 9.5 mm3 and is ideal for applications requiring reduced size and weight. The miniature package withstands rugged environments and is well suited for direct mounting on printed circuit boards.

An interface board with UART and I2C/SM Bus is also available.

The component is compliant to Telcordia 1221 reliability standards and RoHS requirements 2015/863/EU.

TECHNICAL SPECIFICATIONS

 UnitMinTypMax
Optical Specifications  
Tuning range (O band variant) nm 1260   1360
Tuning range (C band variant)  nm 1528   1569
Tuning range (L band variant)  nm 1570   1615

Insertion loss 1

dB   2.5 4.0
Variant TFxx50Full bandwidth @ 0.5 dB nm   0.12  
Full bandwidth @ 3 dB nm   0.3  
Full bandwidth @ 10 dB nm   0.6  
Full bandwidth @ 20 dB nm   0.8  
Variant TFxx100Full bandwidth @ 0.5 dB nm    0.2  
Full bandwidth @ 3 dB nm   0.5  
Full bandwidth @ 10 dB nm   1.0  
Full bandwidth @ 20 dB nm   1.2  
Return loss  dB 30    
Wavelength repeatability  nm   0.01   
Wavelength temperature dependence  pm/˚C   1 5
Switching time  ms   10  50
Polarization dependent loss  dB   0.3  
Durability cycles No wear out
Side Mode Suppression Ratio (SMSR) dB 25
Electrical Specifications (optical component)  
Driving voltage voltage V 0   60
Driving voltage damage threshold V     65
Electrostatic discharge tolerance 2 V     70
Electrical specifications (control board)  
Supply voltage V 4.75 5 5.25
Power consumption (idle) W   0.2  
Power consumption (operating) W   1  
UART speed baud 9600   115200
SMBus/I2C bus speed kHz     400
Input logic level low V   0 0.6
Input logic level high V 2.4 5  
Output logic level low V   0 0.6
Output logic level high V 2.6 3.3  
Reset inactive voltage3 V 2.4 5  
Reset active voltage V   0 0.9
Reset pulse duration μs 15    
Package  
Operating temperature ˚C 0   70
Storage temperature ˚C -40   70
Operation humidity (non condensing) % r.h. 0   95
Pigtail length cm 50   100
Size (optical component) mm 43.3 x 11.2 x 9.5
Size (with control board) mm 45 x 23 x 10
Weight g 75
RoHS Compliance 2015/863/EU (no exceptions)

1 Value @ 25 ˚C, without connectors.
2 The bare optical component is not protected against ESD and need special care during handling.
3 Through onboard pull-up resistor.

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  Rue des Draizes 5,
     CH 2000 Neuchâtel
     Switzerland
  + 41 32 732 15 20
  + 41 32 732 15 29
  info@sercalo.com

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