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 with switching time below 50 ms and insertion loss below 3 dB.
The bare Tunable Filter component (BCTF variant) measures only 43x11x9.5 mm 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/SMBus is also available.
The component is compliant to Telcordia 1221 reliability standards and RoHS requirements 2015/863/EU.
|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|
Sercalo’s Tunable Filter is composed by an optical system where light coming from the input fiber is collimated on a fused silica grating. The grating diffracts the light with a distinct angle for each wavelength. Light is then reflected by a MEMS mirror onto the output collimator which only couples a small fraction of it into the output fiber. By modifying the MEMS mirror tilt angle user can chose the central wavelength of the filter.
|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
|Variant TFxx50||Full 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 TFxx100||Full 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|
|Wavelength temperature dependence||pm/˚C||1||5|
|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)|
|Power consumption (idle)||W||0.2|
|Power consumption (operating)||W||1|
|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|
|Operation humidity (non condensing)||% r.h.||0||95|
|Size (optical component)||mm||43.3 x 11.2 x 9.5|
|Size (with control board)||mm||45 x 23 x 10|
|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.