------ The KY-BPRM-4CH series
Key Features
lSpectral Range 400-1700nm
lVarious 3dB band-width options
lRise time Min.<0.2ns
lIntegrates four channels
lCMRR>30dB
lLow noise
lSingle power supply DC 5V
lDimensions 86x47x36mm
lCan be customized
Applications
lLaser radar
lBrillouin Optical Fiber Sensing System
lf-OTDR
lOptical heterodyne detection system
Options
lBand-width
lGain
lOutput Coupling
lNumber of channels
Description
The KY-BPRM-4CH series four channels balanced photoreceiver is a product specifically developed for the optical heterodyne detection system. It integrates four balanced photoreceiver with the same performance, each of them integrates two matched high linearity analog PIN detector and low noise broadband transimpedance amplifier, with high gain, high sensitivity, DC coupling output and high common-mode rejection ratio(CMRR). This can effectively reduce the common mode noise of the input light and improve the signal to noise ratio of the system. The module is powered by positive 5V, and the input optical interface is optic fiber. The electric signal is SMA output, mainly used in laser radar , optical fiber sensing system and other fields.
Block diagram
Performance Parameters
InGaAs Balanced Photoreceiver (Fiber Input) |
PN | KY-BPRM-BW-I--FA |
Number of channels | 4 or others |
Detector type | InGaAs / PIN |
Input | FC/APC |
Spectral range | 800-1700nm |
Peak responsivity | 0.9A/W @ 1550 nm |
Detector diameter | 75mm |
Band-width(3dB) | RF OUTPUT | 10MHz | 75MHz | 200MHz | 500MHz | 30K~1.5GHz |
Peak Gain @High resistance | 51x 103 V/W | 250x 103 V/W | 40 x 103 V/W | 10x 103 V/W | 2x 103 V/W |
Rise time | 30ns | 4.5ns | 1.8ns | 0.7ns | 0.2ns |
CMRR | >30 dB | >30 dB | >25 dB |
Saturated optical power | Unbalanced | 58.8uW | 12.5uW | 97.5uW | 0.38mW | 1mW |
Balanced | 5mW |
Coupling | DC | AC only |
Impedance | 50W |
Equivalent noise power NEP | 4.1pW/√Hz | 6.9pW/√Hz | 11.2pW/√Hz | 17.9 pW/√Hz | 12.9pW/√Hz |
Total output noise voltage | <0.3mVRMS | <15mVRMS | <6.3mVRMS | <4mVRMS | <1mVRMS |
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General Parameters
Parameters | Typ. | Remarks |
RF OUT side | Output electrical signal interface | SMA(Female) |
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Output DC offset | +/-3mV | No input |
Maximum output voltage | ±3.8V | High resistance |
±1.9V | 50W |
Power interface | 2P through-core capacitor |
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Powered by | DC 12V | Operating Voltage |
<600mA | Working current |
Light damage threshold | 10mW | CW or Peak power |
Dimensions | 86x47x36mm |
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Operating temperature | -20~65°C |
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Dimensions(Unit:mm)
Ordering Information
KY – BPRM – CH – BW - I - XX
CH---Number of channels
BW—Bandwidth
XX --- Other requirements