Sercalo SC Coaxial Optical MEMS 1xN Switch Series
Coaxial 1xN fiber optic MEMS switch family with up to 1x48 ports, single-mode, specialty or PM fibers and a hermetically sealed housing.
- Wavelength range
- 1250 to 1670 nm
- Insertion loss up to 1x4
- 0.4 dB typ., 1.0 dB max.
- Insertion loss up to 1x16
- 0.8 dB typ., 1.2 dB max.
- Insertion loss up to 1x24
- 1.0 dB typ., 1.5 dB max.
Overview
The Sercalo SC series consists of bidirectional opto-mechanical 1xN fiber optic switches based on a coaxial design, in which a single electrostatic MEMS mirror redirects light from a common fiber to one of N output ports. The MEMS technology provides low insertion loss and low crosstalk between channels, with constant switching performance over the life of the device. The coaxial design keeps the footprint small in high port count configurations.
The MEMS is hermetically sealed and the fiber collimator is laser welded, giving a broad operating temperature range and long-term stability; no epoxy is present in the optical path. The component is compliant with Telcordia 1221 reliability standards and RoHS requirements 2015/863/EU.
The switch is non-latching: at power-off it breaks the optical connection and the routing of the common port is not defined. Because the component is bidirectional, the common port can be used as input or output. The PM Panda fiber version is offered up to 1x4 ports.
Variants
The switch engine is the same across the family; only the driver card is adapted. Variants are the SC standard size (colored bare fibers or ribbon fibers), the mSC miniature size with a 7x40 mm driver board, the rSC with an industry compatible pinout, the mrSC mini industry compatible variant without metal box, and the bcSC bare optical component. Control is via UART, I2C/SMBus and parallel interfaces depending on the variant, with an Ethernet interface available on request.
Models in this series
| Model | Description | |
|---|---|---|
| bcSC |
Sercalo bcSC Bare Optical Component Coaxial MEMS 1xN Switch
Bare optical component version of the Sercalo coaxial MEMS 1xN switch, driven directly by axis voltages. |
Details → |
| mRSC1xN |
Sercalo mRSC1xN Mini Industry Compatible Coaxial Optical MEMS 1xN Switch
Mini coaxial MEMS fiber optic 1xN switch with an industry compatible pinout, no metal box and a UART/TTL interface. |
Details → |
| MSC1xN |
Sercalo MSC1xN Miniature Coaxial Optical MEMS 1xN Switch
Miniature coaxial MEMS fiber optic 1xN switch with a small 7x40 mm driver board and UART/I2C interface. |
Details → |
| RSC1xN |
Sercalo RSC1xN Industry Compatible Coaxial Optical MEMS 1xN Switch
Coaxial MEMS fiber optic 1xN switch with an industry compatible pinout, UART/TTL interface and a 68x30x9 mm package. |
Details → |
| SC1xN |
Sercalo SC1xN Standard Size Coaxial Optical MEMS 1xN Switch
Standard size coaxial MEMS fiber optic 1xN switch with UART, TTL and I2C interfaces and bare or ribbon fibers. |
Details → |
Key Features
- Single MEMS mirror coaxial 1xN design
- Up to 1x48 port configurations
- Standard, specialty or PM (Panda) fibers
- Hermetically sealed MEMS and laser welded fiber collimator
- No epoxy in the optical path
- Low insertion loss and low crosstalk
- Bidirectional operation; common port usable as input or output
- Non-latching (momentary) switching
- UART, I2C/SMBus and parallel interface
- Ethernet interface available on request
- Compliant with Telcordia 1221 reliability standards
- RoHS compliant (2015/863/EU)
- Miniature packages suited for direct PCB mounting
Specifications
| Wavelength range |
1250 to 1670 nm
Min 1250, max 1670 |
|---|---|
| Insertion loss up to 1x4 |
0.4 dB typ., 1.0 dB max.
Values at 25 ˚C at 1550 nm, without connectors. For operation over several bands between 1250 to 1670 add 0.5 dB |
| Insertion loss up to 1x16 |
0.8 dB typ., 1.2 dB max.
Values at 25 ˚C at 1550 nm, without connectors. For operation over several bands between 1250 to 1670 add 0.5 dB |
| Insertion loss up to 1x24 |
1.0 dB typ., 1.5 dB max.
Values at 25 ˚C at 1550 nm, without connectors. For operation over several bands between 1250 to 1670 add 0.5 dB |
| Insertion loss up to 1x36 |
1.2 dB typ., 2.0 dB max.
Values at 25 ˚C at 1550 nm, without connectors. Web page states insertion loss below 1,2dB; datasheet max. value differs |
| Insertion loss up to 1x64 |
1.2 dB typ., 2.0 dB max.
Values at 25 ˚C at 1550 nm, without connectors |
| Crosstalk | 50 dB min., 60 dB typ. |
| Directivity |
30 dB min.
Specified for port counts up to 16. For switches with port counts higher than 16 directivity may be degraded |
| Polarization dependent loss | 0.1 dB max. |
| Return loss | 50 dB min., 55 dB typ. |
| Wavelength dependent loss (one band) | 0.2 dB max. |
| Wavelength dependent loss (1250–1670 nm) | 0.5 dB typ., 1.0 dB max. |
| Temperature dependent loss |
0.3 dB max.
The RSC1xN datasheet (90-1180-15) states 0.2 dB max. |
| Maximum optical power level |
500 mW max.
It is recommended to turn off the laser during switch transients when switching optical power above 500 mW (RSC1xN datasheet: above 100 mW) |
| Switching time | 5 ms typ., 10 ms max. |
| Cycle rate | 10 Hz typ., 50 Hz max. |
| Repeatability |
0.01 dB max.
For constant temperature and polarization |
| Durability | No wear out |
| Polarization extinction ratio |
20 dB min.
PM Panda version offered up to 1x4 ports |
|---|
|
Supply voltage
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
4.75 V min., 5 V typ., 5.25 V max. |
|---|---|
|
Power consumption, normal mode
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
150 mW max. |
|
Power consumption, standby
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
40 mW typ. |
|
UART speed
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
9600 to 115200 baud
Min 9600, max 115200 |
|
SMBus/I2C bus speed
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
400 kbps max. |
|
Input logic level low
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
0 V typ., 0.6 V max. |
|
Input logic level high
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
2.4 V min., 5 V typ. |
|
Output logic level low
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
0 V typ., 0.6 V max. |
|
Output logic level high
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
2.6 V min., 3.3 V typ. |
|
Reset inactive voltage
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
2.4 V min., 5 V typ.
Through onboard pull-up resistor |
|
Reset active voltage
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
0 V typ., 0.9 V max. |
|
Reset pulse duration
SC1xN, MSC1xN, RSC1xN, mRSC1xN |
15 ms min. |
|
Interface
SC1xN |
UART/TTL/I2C |
|
Interface
MSC1xN |
UART/I2C |
|
Interface
RSC1xN, mRSC1xN |
UART/TTL |
|
Driving voltage
bcSC |
0 to 42 V
Min 0, max 42 |
|---|---|
|
Driving voltage damage threshold
bcSC |
45 V max. |
|
Electrostatic discharge tolerance
bcSC |
50 V max.
The bare optical component is not protected against ESD |
| Operating temperature |
-10 to 70 ˚C
Min -10, max 70 |
|---|---|
| Storage temperature |
-40 to 85 ˚C
Min -40, max 85 |
| Operation humidity (non condensing) |
0 to 95 % r.h.
Min 0, max 95 |
| Pigtail length |
50 to 100 cm
Min 50, max 100 |
|
Dimensions
SC1xN |
40 x 21 x 7 mm |
|
Dimensions
MSC1xN |
40 x 7 x 7.5 mm
Web page lists packaging 40x21x7,5 mm for MSC1xN |
|
Dimensions
RSC1xN |
68 x 30 x 9 mm |
|
Dimensions
mRSC1xN |
38 x 16 x 9 mm
Web page lists packaging 68x30x9 mm for mRSC1xN |
|
Dimensions
bcSC |
6 x 35 mm |
| ROHS Compliance | 2015/863/EU (no exceptions) |
Applications
- Optical network switching
- Instrumentation
- Test and measurement
Options & Accessories
| Option | Description |
|---|---|
| bc | Package type: Bare component |
| m | Package type: Miniature |
| r | Package type: Industry compatible — Box |
| mr | Package type: Industry compatible (mini) |
| SCHV | Switch type: high vibration environment |
| 1x4 | Ports: 1x4 |
| 1x8 | Ports: 1x8 |
| 1x12 | Ports: 1x12 |
| 1x16 | Ports: 1x16 |
| 1x24 | Ports: 1x24 |
| 1x32 | Ports: 1x32 |
| 1x36 | Ports: 1x36 |
| 9 | Fiber type: SMF28ULTRA — Listed as SMF23ULTRA on the web page configurator |
| 9PM | Fiber type: PM15-U40A (Corning Panda fiber) — SC1xN datasheet lists PM15-U25A (Corning Panda) |
| 7 | Fiber type: SM980 for 1050nm |
| 4 | Fiber type: SM600 for 630nm |
| B | Fiber sleeve: 250um bare fibers |
| R | Fiber sleeve: 8-fibers or 12-fibers ribbon |
| N | Fiber sleeve: 900 um sleeve — On rSC only |
| 05 | Pigtail length: 50 cm |
| 10 | Pigtail length: 100 cm |
| FP | Connector: FC-PC |
| FA | Connector: FC-APC narrow key |
| LP | Connector: LC-PC |
| LA | Connector: LC-APC |
| SA | Connector: SC-APC |
| SP | Connector: SC-PC |