Sercalo TF MEMS Tunable Optical Filter for O, C and L Band
MEMS tunable optical filter for ITU O, C or L band with 0.3 nm or 0.5 nm FWHM bandwidth and a tuning range of up to 40 nm
- Tuning range (O band variant)
- 1260 to 1360 nm
- Tuning range (C band variant)
- 1528 to 1569 nm
- Tuning range (L band variant)
- 1570 to 1615 nm
- Insertion loss
- 2.5 dB typ., 4.0 dB max.
Overview
The Sercalo TF is a tunable optical filter based on MEMS technology, designed for the ITU O, C and L bands with 50 GHz or 100 GHz channel spacing. Wavelength tuning uses an integrated micro-mirror, with a switching time below 50 ms.
Measurement principle
Light from the input fiber is collimated onto a fused silica grating, which diffracts each wavelength at a distinct angle. A MEMS mirror reflects the light onto the output collimator, which couples only a small fraction of it into the output fiber. Changing the tilt angle of the MEMS mirror selects the central wavelength of the filter.
Packaging
The bare optical component (BCTF variant, without driver board) measures 43 x 11 x 9.5 mm and suits applications where size and weight are limited. The miniature package withstands rugged environments and can be mounted directly on printed circuit boards. The filter is also available with an interface board offering UART and I2C/SMBus control.
The component complies with Telcordia 1221 reliability standards and RoHS requirements 2015/863/EU.
Key Features
- 0.3 nm FWHM bandwidth
- 40 nm tuning range
- Hermetically sealed
- MEMS micro-mirror tuning with switching time below 50 ms
- Bare component (BCTF) body size 43 x 11 x 9.5 mm, suitable for direct PCB mounting
- Low power consumption
- Low insertion loss
- Also available with UART and I2C/SMBus interface board
- Compliant with Telcordia 1221 reliability standards
- RoHS 2015/863/EU compliant
Specifications
|
Tuning range (O band variant)
O
|
1260 to 1360 nm
Min 1260, max 1360
|
|---|---|
|
Tuning range (C band variant)
C
|
1528 to 1569 nm
Min 1528, max 1569
|
|
Tuning range (L band variant)
L
|
1570 to 1615 nm
Min 1570, max 1615
|
| Insertion loss |
2.5 dB typ., 4.0 dB max.
Value @ 25 °C, without connectors. For span over more than 50 nm add 1 dB. Web page overview states insertion loss below 3 dB; datasheet values given here
|
|
Full bandwidth @ 0.5 dB
TFxx50
|
0.12 nm
Typ.
|
|
Full bandwidth @ 3 dB
TFxx50
|
0.3 nm
Typ.
|
|
Full bandwidth @ 10 dB
TFxx50
|
0.6 nm
Typ.
|
|
Full bandwidth @ 20 dB
TFxx50
|
0.8 nm
Typ.
|
|
Full bandwidth @ 0.5 dB
TFxx100
|
0.2 nm
Typ.
|
|
Full bandwidth @ 3 dB
TFxx100
|
0.5 nm
Typ.
|
|
Full bandwidth @ 10 dB
TFxx100
|
1.0 nm
Typ.
|
|
Full bandwidth @ 20 dB
TFxx100
|
1.2 nm
Typ.
|
| Return loss |
25 dB
Min.
|
| Wavelength repeatability |
0.01 nm
Typ.
|
| Wavelength temperature dependence | 1 pm/°C typ., 5 pm/°C max. |
| Switching time | 10 ms typ., 50 ms max. |
| Polarization dependent loss | 0.3 dB typ., 0.5 dB max. |
| Durability |
No wear out
Cycles
|
| Side Mode Suppression Ratio (SMSR) |
25 dB
Typ.
|
| Driving voltage |
0 to 60 V
Min 0, max 60
|
|---|---|
| Driving voltage damage threshold |
65 V
Max.
|
| Electrostatic discharge tolerance |
70 V
Max. The bare optical component is not protected against ESD and needs special care during handling
|
| Supply voltage |
4.75 / 5 / 5.25 V
Min / typ. / max.
|
|---|---|
| Power consumption (idle) |
0.2 W
Typ.
|
| Power consumption (operating) |
1 W
Typ.
|
| UART speed | 9600 to 115200 baud |
| SMBus/I2C bus speed |
400 kHz
Max.
|
| Input logic level low | 0 V typ., 0.6 V max. |
| Input logic level high | 2.4 V min., 5 V typ. |
| Output logic level low | 0 V typ., 0.6 V max. |
| Output logic level high | 2.6 V min., 3.3 V typ. |
| Reset inactive voltage |
2.4 V min., 5 V typ.
Through onboard pull-up resistor
|
| Reset active voltage | 0 V typ., 0.9 V max. |
| Reset pulse duration |
15 ms
Min.
|
| Operating temperature | 0 to 70 °C |
|---|---|
| Storage temperature | -40 to 70 °C |
| Operation humidity (non condensing) | 0 to 95 % r.h. |
| Pigtail length | 50 to 100 cm |
|
Size (optical component)
BC
|
43.3 x 11.2 x 9.5 mm |
| Size (with control board) | 45 x 23 x 10 mm |
| Weight | 75 g |
| RoHS compliance | 2015/863/EU (no exceptions) |
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Reconfigurable optical add/drop multiplexers
- Optical sensor interrogators
- Optical power monitors
- Low cost spectrometers
Options & Accessories
| Option | Description |
|---|---|
| none | Package type: with interface board — Filter with UART and I2C/SMBus interface board |
| BC | Package type: bare component — Bare optical component (BCTF) without driver board |
| 1 | Number of independent channels: 1 (two fibers) |
| O | Tuning range: O band (1260-1360 nm) |
| C | Tuning range: C band (1528-1569 nm) |
| L | Tuning range: L band (1570-1615 nm) |
| 50 | Bandwidth FWHM: 0.3 nm |
| 100 | Bandwidth FWHM: 0.5 nm |
| 9 | Fiber type: SMF28ULTRA — Other fiber types upon request |
| B | Fiber sleeve type: 250 um bare fibers |
| N | Fiber sleeve type: 900 um sleeve |