818 Series fiber-optic power sensors are calibrated for use with newport power meters. They feature a removable FC/PC fiber adapter that can be removed for free space power measurement, or replaced with optional FC/APC or SMA fiber adapters.
- NIST traceable calibration with low calibration uncertainty
- Removable FC/PC fiber-optic adapter
- Detachable DB15 calibration module
- Optional FC/APC or SMA fiber adapters See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | 818-IG-L-FC/DB 818 Fiber-Optic Photodiode Power SensorsFiber Optic Detector, InGaAs, 800-1650 nm, 10 mW, DB15 | |||||
![]() | 818-IR-L-FC/DB 818 Fiber-Optic Photodiode Power SensorsFiber Optic Detector, Ge, 780-1800 nm, 10 mW, DB15 | |||||
![]() | 818-SL-L-FC/DB 818 Fiber-Optic Photodiode Power SensorsFiber Optic Detector, Si, 400-1100 nm, 4 mW, DB15 | |||||
![]() | 818-UV-L-FC/DB 818 Fiber-Optic Photodiode Power SensorsFiber Optic Detector, UV-Si, 200-1100 nm, 1.5 mW, DB15 |
Compatible Power Meters
Newport offers a comprehensive range of optical power meters from low cost, hand-held meters to the most advanced dual-channel benchtop meter available in the market. Presented here is a list of meters compatible with the 918D Series sensors. For more detailed information about our power meters, please see our Optical Power Meter Guide.
![]() 1938-R/2938-R |
![]() 1936-R/2936-R |
![]() 1919-R |
![]() 843-R/843-R-USB |
![]() 845-PE-RS |
![]() 844-PE-USB |
|
|---|---|---|---|---|---|---|
| User Interface | Touchscreen | Advanced | Advanced | Simple | User Commands, PM Manager | PMManager only |
| Measurement Modes | Power, Low Freq. Power, Peak-to-Peak Power, RMS Power, Exposure, Current |
Power, Peak-to-Peak Power, RMS Power, Current |
Power, Low Freq. Power Exposure |
Power | Power, Low Freq. Power |
Power, Low Freq. Power |
| Analog Bandwidth | Up to 200 kHz | Up to 400 kHz | 15 Hz | 15 Hz | 15 Hz | 15 Hz |
| Data Storage | 2 GB internal, External USB memory size, Via PMManager |
250,000 pts internal | Limited by USB memory size | 843-R-USB: Via PMManager 843-R: None |
User Commands, PM Manager | Via PMManager |
| Measurement Rate per Second | 10,000 | 10,000 | 15 | 15 | 15 | 15 |
| Trigger In/Out | ✔ | ✔ | ||||
| Analog Out | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Computer Interface | USB RS232 Ethernet |
USB RS232 |
USB RS232 |
843-R-USB: USB 843-R: None |
RS232 | USB |
Please refer to Newport Power Meter and Detector Legacy and Compatibility for a complete list of meters that are compatible with this model.
Specifications
Features
Excellent Photodiode Linearity
These photodiodes show excellent linearity over a large dynamic range. This is ideal for use in applications that require high accuracy measurements down to the pW level, especially when combined with a high sensitivity power meter that can accommodate the large dynamic range of the optical signal.
Responsivity Variation over Temperature
A natural characteristic of a photodiode is for the its optical response to change as the temperature changes near the bandgap of semiconductor materials. Newport’s 918D series sensors feature a thermocouple near the photodiode, which allows certain Newport meters to read the temperature and automatically adjust the responsivity, ensuring the most accurate measurements.
Cost Effective Fiber-Optic Power Detection
These 818 Series fiber-optic photodiode optical power sensors are a low cost alternative to the 818-IS or 918D-IS Series sphere-based fiber-optic detectors. They are based on our standard 818 Series detectors with an included, removable 884-FC FC/PC fiber optic adapter. Replacing 884-FC with 884-FCA, 884-SMA, 884-E2000FC, and 884-ADAPT will accommodate for additional popular fiber optic connectors.
Factors that Affect Maximum Measurable Power
The maximum measurable power of photodiode sensors is dependent on several factors such as the wavelength of incoming light, photodiode current output saturation, temperature, use of an attenuator and a power meter's maximum current input value. Newport provides maximum power specifications based on the power meter models, with and without an attenuator, and wavelength-dependent maximum power level. With these factors affecting measurable power in mind, choosing the proper detector for your application is critical.
NIST-traceable Sensor Calibration
Our calibrated photodiode sensors include a full spectral response calibration utilizing NIST-traceable standards calibrated with high-precision equipment maintained in Newport’s optical detector calibration facility. Tight calibration facility and process control allows the tightest calibration uncertainty in industry. Each detector is shipped with the calibration data, which is electronically stored inside the detector's EEPROM. A certificate of calibration as well as the actual calibration curves and data are shipped with each detector for attenuator and no attenuator models. To maintain accuracy and guarantee performance, Newport recommends annual photodiode detector calibration.
Free space measurements
The photodiode sensor in the 818-xx-L-FC/DB is calibrated in free space. The 884-FC fiber adapter has no impact on calibration. Therefore, free space measurements can be done simply by removing the fiber adapter.
Removable Calibration Module
The 818 series detectors include a BNC connector with a removable calibration module. The /DB suffix indicates a DB15-style calibration module that is directly compatible with Newport’s current power meters. For older instruments that require no calibration module (BNC), we recommend that customers purchase 818-xx/DB and simply remove the DB15 calibration module. Please order the 818-SCAL when only a new calibration module is needed for the 818 Series photodiode detectors, without the need to recalibrate the detector.
Additional Functionality with BNC Connector
The BNC connector extends the functionality of the 818 Series photodiode sensors. It enables direct connection to an ammeter or lock-in amplifier. It also allows the detector output to be viewed on an oscilloscope after first connecting it to a current-to-voltage preamplifier, such as Newport's model 70710. Furthermore, the cable length can be extended by connecting another BNC cable.
Accessories
Fiber Optic Adapters
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
![]() | 818-FA Connectorized Fiber Adapter Mount, 818 & 918D Series Sensors | |||||
![]() | 884-E2000FC Optical Fiber Adapter, Diamond E-2000, 818 & 918D Series Sensors | |||||
![]() | 884-FCA Optical Fiber Adapter, FC/APC, 818 & 918D Series Sensors | |||||
![]() | 884-SMA Optical Fiber Adapter, SMA, 818 & 918D Series Sensors | |||||
![]() | FP4-COL-1550 Lensed Adapter Core, 1550 nm AR Coated, FP4 Series Adapters |
Resources
Literature
Maximum Measureable Power for Photodiode Detector(438.4 kB, PDF) Fiber Optic Detector Datasheets.pdf(425.2 kB, PDF)
Manuals
818-xx-L-FC Fiber Optic Detectors Quick Start Guide(24.9 kB, PDF) RevB 818 Series Manual(2.6 MB, PDF)
Technical Notes
Selection Guides
Other
818-SL & 818-UV RoHS Certificate(291.5 kB, PDF) 818-IR & 818-IG RoHS Certificate(290.9 kB, PDF) 818 Series EU27 Declaration of Conformity(208 kB, PDF)






















