Multi-Channel Monitoring system
(Up to 260 channels, lossless)
The OSW series of Multi-Channel Monitoring system is designed to cost-effectively select and monitor any channel in the multi-channel fiber optic network (up to 260) with minimum data stream interruption. It has the option to integrate fiber amplifiers to form a lossless system that taps a significant amount of signal up to 3dBm for special applications. An option to integrate a photodetector with an amplifier for a data rate up to 1GHz is also available.
Features
- Cost-Effective
- Lossless
- 500 Channels
- Compact Size
Specifications
| Parameters | Unit | |||
|---|---|---|---|---|
| Min | Typical | Max | ||
| Operation Wavelength | 750 | 1250~1670 | 2400 | nm |
| Insertion Loss (SM)[1] 1×8 1×24 1×32 1×64 1×128 |
0.5 0.5 0.5 0.5 0.5 |
0.7 0.8 0.9 1.2 1.5 |
0.8 1.0 1.2 1.4 1.8 |
dB |
| Insertion Loss (MM) | 0.5 | 1 | 4.3 | dB |
| Crosstalk, On/Off Ratio (SM)[3] | 70 | dB | ||
| Polarization Extinction Ratio (PM) | 20 | 26 | dB | |
| Switch Speed (Rise, Fall)[4] | 5 | 20 | ms | |
| Durability | 109 | cycle | ||
| Polarization Dependent Loss | 0.04 | 0.2 | dB | |
| Wavelength Dependence Loss[5] | 0.1 | 0.3 | dB | |
| Return Loss[3] | 50 | dB | ||
| Repeatability | 0.05 | 0.1 | dB | |
| Operating Temperature | -5 | 65 | °C | |
| Port to Port Time Delay Difference | 0.5 | ns | ||
| Optical Power Handling (CW) | 300 | 500 | mW | |
| Storage Temperature | -40 | 85 | °C | |
| AC Power Source | 90 ~ 240 V (50 / 60 Hz) | |||
| Weight | 15 kg | |||
| Package Dimension | 1RU / 2RU / 4RU <400mm(D) | |||
- Measurement Conditions: Losses are measured at 1550 nm without connectors for SM28 fiber. Each connector adds 0.2~0.3 dB of loss. Loss increases for shorter or longer wavelengths. 0.5dB Low Loss version is available
- Multimode Switch Performance: The optical performance of a multimode switch depends on the mode fill ratio across the core (CPR). Small Fill Ratio: using a single-mode laser, results in lower loss. Large Fill Ratio: using an LED, results in higher loss. The difference can be 50X.
- Fiber Type Considerations: Multimode (MM) fiber typically exhibits lower performance values compared to single-mode (SM) fiber in similar conditions.
- Intrinsic Switch Performance: The performance values provided reflect the intrinsic switch component capabilities. Remote control introduces additional delay, with Ethernet having the longest delay. Using a Linux-based computer can reduce CPU-induced delay.
- Bandwidth Range: Performance specifications are valid within a 50 nm bandwidth around the central wavelength.
Applications
- Networks
- Instruments
Mechanical Dimensions (mm)
Electrical Interface: Ethernet RJ4
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Optical path IlIustration
Switching Cycle Test
Ordering Information
| Prefix MEMS: |
Type [1] | Wavelength [2] | Control Interface [3] | Package [4] | Fiber Type | Power Supply | Connector [5] | On/Off | PER [6] | Monitor [7] |
|---|---|---|---|---|---|---|---|---|---|---|
| MEMS: | 1×4 = A12 | 1250-1650nm = 1 | Ethernet = 2 | 1RU = 1 | SMF = 1 | 110-220V = 1 | FC/PC = 1 | None = 0 | Non-PM = 0 | None = 0 |
| 1×8 = A18 | 1310nm = 2 | RS232 = 3 | 2RU = 2 | PMF = 2 | 48VDC = 2 | FC/APC = 2 | Yes = 1 | PM = 1 | Port Output = 1 | |
| 1×12 = A14 | 1490nm = 3 | Button/Ethernet = 4 | 3RU = 3 | Special = 0 | 12VDC = 3 | SC/PC = 3 | Special = 0 | Port Display = D | ||
| 1×16 = A16 | 1550nm = 4 | Button/RS232 = 5 | Special = 0 | Special = 0 | SC/APC = 4 | |||||
| Duplex1x2 = D12 | 1310/1550nm = 5 | Ethernet + RS232 = 6 | LC/PC = 5 | |||||||
| Duplex1x4 = D14 | Special = 0 | Special = 0 | LC/APC = 6 | |||||||
| Duplex1x8 = D18 | SC/PC + P = 7 | |||||||||
| Duplex1x12 = D24 | SC/APC + Q = 8 | |||||||||
| Duplex1x16 = D28 | LC/PC + R = 9 | |||||||||
| Duplex1x24 = D48 | LC/APC + S = A | |||||||||
| Dual1x2 = B12 | FC/PC + T = B | |||||||||
| Dual1x4 = B14 | FC/APC + U = C | |||||||||
| Dual1x8 = B18 | MTP 8 = M | |||||||||
| Duplex1x16 = P16 | MTP 12 = N | |||||||||
| Special = 0 | Special = 0 |
[1]. Duplex Mode: Both switches operate simultaneously, designed for Tx/Rx pairs in communication fiber link applications. 0.5dB low loss version exchange A to L.
[2]. Wavelength Coverage: The device supports a wide range of wavelengths. Devices labeled 1, 2, 3, 4, and 5 are the same model but measured at different wavelengths. Customers can request measurements at additional wavelengths for an extra cost.
(0=Special) : Operating Wavelength is 1250-1670nm.
[3]. Manual Switching: A button located on the front panel allows for manual switching, which overrides remote control functionality when activated.
(0=Special) : Ethernet(TCP)/RS232(USB)
[4]. Rack Size: The rack size depends on the connector selection; the smallest size will be chosen wherever possible.
[5]. (0=Special): SC/UPC
[6]. PER Definition: PER refers to the polarization extinction ratio for PM (polarization-maintaining) fiber.
[7]. Input and Output Monitoring: The output monitor function uses an external detector to tap a portion of the passing light and measure its wavelength, while the input monitor uses expensive detectors that are less common. Port Display Option: A front panel LCD displays the selected channel, designed to function alongside the manual push-button control.
Application Notes
Fiber Core Alignment
Note that the minimum attenuation for these devices depends on excellent core-to-core alignment when the
connectors are mated. This is crucial for shorter wavelengths with smaller fiber core diameters that can increase
the loss of many decibels above the specification if they are not perfectly aligned. Different vendors’ connectors
may not mate well with each other, especially for angled APC.
Fiber Cleanliness
Fibers with smaller core diameters (<5 µm) must be kept extremely clean, contamination at fiber-fiber interfaces,
combined with the high optical power density, can lead to significant optical damage. This type of damage usually
requires re-polishing or replacement of the connector.
Maximum Optical Input Power
Due to their small fiber core diameters for short wavelength and high photon energies, the damage thresholds for
device is substantially reduced than the common 1550nm fiber. To avoid damage to the exposed fiber end faces and
internal components, the optical input power should never exceed 20 mW for wavelengths shorter 650nm. We produce a
special version to increase the how handling by expanding the core side at the fiber ends.
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