Features
- Adjustable conversion gain from 103 to 1011 V/W
- Operating range from fW to mW
- Spectral range from 190 to 1700 nm
- NEP down to 6 fW/√Hz
- Bandwidth up to 500 kHz
- Rise time down to 700 ns
- Fibre optic or free space input
- Calibration for all fibre optic models
- Manual and remote control
| Model | OE-200-SI-FST OE-200-SI-FC |
OE-200-UV-FST OE-200-UV-FC |
OE-200-IN1-FST OE-200-IN1-FC |
OE-200-IN2-FST OE-200-IN2-FC |
|---|---|---|---|---|
| Detector Type | Si-PIN | Si-PIN | InGaAs PIN | InGaAs PIN |
| Detector Size [mm] | Ø 1.2 | 1.1 x 1.1 | Ø 0,3 (FC: Ø 0.08) | Ø 0,3 (FC: Ø 0.08) |
| Spectral Range [nm] | 320 - 1060 | 190 - 1000 | 900 - 1700 | 900 - 1700 |
| Calibration Wavelength [nm] | 850 | 850 | 1310 | 1550 |
| NEP (Dependent on Gain Setting) [/√Hz] | 8 fW - 33 pW | 17 fW - 60 pW | 7 fW - 22 pW | 6 fW - 22 pW |
| Useful Operating Range | typ. 100 fW - 2 mW | typ. 200 fW - 2 mW | typ. 100 fW - 2 mW | typ. 100 fW - 2 mW |
| Datasheet |  |
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The Following Characteristics Are Valid For All Models:
| Performance Range | Low Noise | High Speed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Conversion Gain [V/W] | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 105 | 106 | 107 | 108 | 109 | 1010 | 1011 |
| Bandwidth (-3 dB) [kHz] | 500 | 500 | 400 | 200 | 50 | 7 | 1.1 | 500 | 500 | 400 | 200 | 50 | 7 | 1.1 |
| Rise time (10 % - 90 %) | 700 ns | 700 ns | 900 ns | 1.8 µs | 7 µs | 50 µs | 300 µs | 700 ns | 700 ns | 900 ns | 1.8 µs | 7 µs | 50 µs | 300 µs |
| Accuracy Performance | ±1 % electrical, ±5 % electro-optical for fibre optic models, ±15 % electro-optical for free beam models, Calibration for all fibre optic models | |||||||||||||
| Low Pass Filter | Switchable to 10 Hz | |||||||||||||
| Output | ±10 V (@ ≥100 kΩ load) | |||||||||||||
| Power Requirements | ±15 V, +110 mA/−80 mA typ., ±200 mA recommended | |||||||||||||
| Control Interface | 5 opto-isolated digital inputs, TTL/CMOS compatible, analog offset control voltage input | |||||||||||||
| Case | 170 x 60 x 45 mm (L x W x H), Weight 320 g (0.74 lb.) | |||||||||||||
Offset adjustable by trimpot or external control voltage. LED overload indication. Output short-circuit protected. Power supply via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet or contact FEMTO.
Sensitivity meets versatility
The OE-200 series of variable gain photoreceivers is designed for a great variety of applications requiring the fast and precise measurement of small optical signals. By combining a low noise transimpedance amplifier with a silicon or InGaAs photodiode a broad wavelength range from 190 nm up to 1700 nm is covered. The integrated amplifier offers adjustable gain from 103 to 1011 V/W and thus allows the measurement over a wide dynamic range from ca. 100 fW up to 2 mW optical input power. Its high sensitivity is achieved by a low noise design resulting in a noise equivalent power (NEP) of minimum 6 fW/√Hz. Many additional features like switchable signal filters, an offset adjustment and the capability of manual and opto-isolated remote control by a PC make the OE-200 the most versatile photoreceiver in its class.
Wide bandwidth for fast measurement speed
In addition to its high sensitivity the OE-200 also offers a fast signal response. With its maximum bandwidth of 500 kHz it is ideally suited for time resolved measurements with a signal rise time down to 700 ns. Industrial process control, automated measurement systems and fast opto electronic control loops are just a few of the many applications that can profit from a fast optical front-end realised by the OE-200.
Fast optical power meter with calibration
The high precision and low drift of the OE-200 ensure repeatable and consistent measurements even in the highest gain setting. All models with fibre optic input come with an optical calibration for reliable and accurate results. Thus the OE-200 can also be used as precise and fast power meter with a high bandwidth of up to 500 kHz and a wide dynamic range of up to 100 dB.
Compatible with optical bench (free space) and fibre optics
The free space input (FST) is designed as a 1.035″-40 threaded flange with a screw-on coupler ring. It opens up a broad compatibility with optical accessories from various manufacturers, such as lenses, tubes, cage systems, optical adapters etc.
The free-space input can be converted into fibre connections (FC, FSMA) easily by simply screwing on the fibre adapter of the PRA series.
The relatively large-area detector facilitates optical focusing in free-space applications and ensures a high and stable degree of coupling when using the optionally available fibre optic adapter. For models with detector areas smaller than Ø 0.4 mm, the use of fiber adapters is only recommended to a limited extent, since coupling losses and instabilities can occur. If the focus is on high-precision fiber optic measurements, using FC-models with fixed optical fiber input will usually give the best results.
All OE-200 photo receivers are equipped with UNC 8-32 and M4 threaded holes and can therefore be conveniently and stably integrated into optical systems on standard rod holders. The optionally available adapter plate PRA-PAP opens up further mounting options.
Applications
- All purpose lab photoreceiver
- Fibre alignment systems
- Fast power monitoring
- Test of laser diode to fibre coupling
- Linearity measurements over 10 decades
- Calibration of optical communication systems
- Time-resolved pulse and power measurements
- Industrial control and alignment systems
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