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.
- Wavelength range
- 1250 (min.) to 1670 (max.)
- Insertion loss up to 1x4
- 0.4 (typ.) / 1.0 (max.)
- Insertion loss up to 1x16
- 0.8 (typ.) / 1.2 (max.)
- Insertion loss up to 1x24
- 1.0 (typ.) / 1.5 (max.)
Overview
Sercalo's SC coaxial 1xN fiber optic switches are bidirectional opto-mechanical switches. A single electrostatic MEMS mirror redirects light from a common fiber to one of N ports. The MEMS design gives low insertion loss and low crosstalk between channels, and switching performance stays constant over the life of the switch. The coaxial layout keeps the footprint small in high port count configurations.
The MEMS is hermetically sealed and the fiber collimator is laser welded, so the switch works over a broad temperature range and is stable over the long term. There is no epoxy in the optical path. 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 an input or an output. The PM (Panda fiber) version is offered with up to 1x4 ports.
The switch comes in several variants to make integration into existing systems easier. The switch engine is the same in all of them; only the driver card changes. The variants are a standard size, a miniature size, an industry-compatible pinout, a mini industry-compatible version without a metal box, and a bare optical component. The component meets Telcordia 1221 reliability standards and the RoHS requirements of 2015/863/EU.
Key Features
- Hermetically sealed MEMS and laser welded fiber collimator for a broad temperature range and long-term stability
- No epoxy in the optical path
- Low insertion loss and low crosstalk between channels
- Constant switching performance over life
- Bidirectional: the common port can be used as input or output
- Non-latching: the optical connection is broken at power-off
- Specialty or PM fibers; PM Panda version up to 1x4 ports
- Ethernet interface available on request
- Meets Telcordia 1221 reliability standards
- RoHS compliant to 2015/863/EU
Specifications
| Wavelength range | 1250 (min.) to 1670 (max.) |
|---|---|
| Insertion loss up to 1x4 |
0.4 (typ.) / 1.0 (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 (typ.) / 1.2 (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 (typ.) / 1.5 (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 (typ.) / 2.0 (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 1x64 |
1.2 (typ.) / 2.0 (max.)
Values at 25 ˚C at 1550 nm, without connectors. Listed in datasheet 90-1180-18 only.
|
| Crosstalk | 50 (min.) / 60 (typ.) |
| Directivity |
30 (min.)
Directivity is specified for port counts up to 16. For switches with port counts higher than 16 directivity may be degraded.
|
| Polarization dependent loss | 0.1 (max.) |
| Return loss | 50 (min.) / 55 (typ.) |
| Wavelength dependent loss (one band) | 0.2 (max.) |
| Wavelength dependent loss (1250–1670 nm) | 0.5 (typ.) / 1.0 (max.) |
| Temperature dependent loss |
0.3 (max.)
Datasheet RSC1xN (90-1180-15) gives 0.2 dB max.
|
| Maximum optical power level |
500 (max.)
It is recommended to turn off the laser during switch transients when switching optical power above 500 mW (datasheet RSC1xN 90-1180-15 states above 100 mW).
|
| Switching time | 5 (typ.) / 10 (max.) |
| Cycle rate | 10 (typ.) / 50 (max.) |
| Repeatability |
0.01 (max.)
For constant temperature and polarization.
|
| Durability | No wear out |
| Polarization extinction ratio | 20 (min.) |
|---|
|
Supply voltage
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
4.75 (min.) / 5 (typ.) / 5.25 (max.) |
|---|---|
|
Power consumption, normal mode
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
150 (max.) |
|
Power consumption, standby
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
40 (typ.) |
|
UART speed
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
9600 (min.) to 115200 (max.) |
|
SMBus/I2C bus speed
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
400 (max.) |
|
Input logic level low
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
0 (typ.) / 0.6 (max.) |
|
Input logic level high
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
2.4 (min.) / 5 (typ.) |
|
Output logic level low
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
0 (typ.) / 0.6 (max.) |
|
Output logic level high
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
2.6 (min.) / 3.3 (typ.) |
|
Reset inactive voltage
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
2.4 (min.) / 5 (typ.)
Through onboard pull-up resistor.
|
|
Reset active voltage
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
0 (typ.) / 0.9 (max.) |
|
Reset pulse duration
SC1xN, MSC1xN, RSC1xN, mRSC1xN
|
15 (min.) |
| Interface | UART/I2C |
| Operating temperature | -10 (min.) to 70 (max.) |
|---|---|
| Storage temperature | -40 (min.) to 85 (max.) |
| Operation humidity (non condensing) | 0 (min.) to 95 (max.) |
| Pigtail length | 50 (min.) to 100 (max.) |
| ROHS Compliance | 2015/863/EU (no exceptions) |
| Dimensions |
40 x 7 x 7.5
Miniature size, small driver board 7x40 mm. The web page lists 40x21x7,5 mm.
|
Specifications are taken from the manufacturer's documentation. See the datasheet for complete and current values.
Applications
- Optical network switching
- Instrumentation
- Test and measurement
Options & Accessories
| Option | Description |
|---|---|
| 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 — The web configurator lists SMF23ULTRA; the datasheets state SMF28ULTRA. |
| 9PM | Fiber type: PM15-U40A (Corning Panda fiber) — PM version offered up to 1x4 ports. Datasheet 90-1180-18 lists PM15-U25A. |
| 7 | Fiber type: SM980 for 1050nm |
| 4 | Fiber type: SM600 for 630nm — Other fiber types and wavelengths upon request. |
| B | Fiber sleeve type: 250um bare fibers |
| R | Fiber sleeve type: 8-fibers or 12-fibers ribbon |
| N | Fiber sleeve type: 900 um sleeve — On rSC only. |
| 05 | Pigtail length: 50 cm |
| 10 | Pigtail length: 100 cm |
| FP | Connectors type: FC-PC |
| FA | Connectors type: FC-APC narrow key |
| LP | Connectors type: LC-PC |
| LA | Connectors type: LC-APC — Listed in datasheet 90-1180-18. |
| SA | Connectors type: SC-APC |
| SP | Connectors type: SC-PC |
| SCHV | Switch type: high vibration environment — Listed in datasheet 90-1180-18. |
