Balanced Photodetector Module
Product introduction
HC-BPRM series balanced photodetector module integrates two matched high-linearity analog PIN detectors and a low-noise broadband transimpedance amplifier, featuring high gain, high sensitivity, DC-coupled output and high common-mode rejection ratio, which can effectively reduce the common-mode noise of the input light and improve the signal-to-noise ratio of the system. The power supply of the module is positive 12 V, the input optical interface can select optical fiber interface or space incidence, and the electrical signal is output from the SMA port. The module is mainly used in the fields of nanosecond optical pulse detection, laser radar, optical fiber coherent tomography and optical fiber sensing system.
Product features
Spectral range 400 ~ 1700nm
3dB bandwidth multiple options
Optional with output monitoring
Response Time Min. <0.2ns
CMRR > 30dB
Low noise
DC 12V single power supply
Compact 47x42x20mm
Can be customized
Scope of application
Ns optical pulse detection
Laser radar
Brillouin optical fiber sensing system
∅- OTDR
Optical coherence tomography (OCT)
Optional
Photosensitive surface
Bandwidth
Gain
Coupling mode
Technical parameters
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siIicon balanced photodetector module |
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Parameter |
HC-BPRM-BW-S-FA/FS |
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Detector type |
Si / PIN |
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Optical input |
Free Space or FC/APC |
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Wavelength range |
400-1100nm |
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Peak responsivity |
0.5 A/W @ 905 nm |
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Photosensitive surface diameter |
1.2mm |
0.5 mm |
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Common Mode Rejection Ratio (CMRR) |
>25 dB (typ. >30 dB) |
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Bandwidth (3dB) |
RF OUTPUT |
10MHz |
350MHz |
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Conversion gain @ high impedance |
26x103V/W |
5x 103 V/W |
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Rise time |
30ns |
1ns |
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Saturated optical power |
Out of balance |
115uW |
0.76mW |
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Balance |
5mW |
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Coupling mode |
DC (AC optional) |
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Output impedance |
50W |
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Equivalent noise power NEP |
7.0 pW/√Hz |
42.7 pW/√Hz |
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Total Output Noise Voltage * |
<0.3mVRMS |
<4mVRMS |
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InGaAs balanced photodetector module (fiber input) |
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Parameter |
HC-BPRM-BW-I--FA |
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Detector type |
InGaAs / PIN |
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Optical input |
FC/APC |
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Wavelength range |
800-1700nm |
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Peak responsivity |
0.9A/W @ 1550 nm |
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Photosensitive surface diameter |
75mm |
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Bandwidth (3dB) |
RF OUTPUT |
10MHz |
75MHz |
200MHz |
400MHz |
500MHz |
30K~1.5GHz |
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Conversion gain @ high impedance |
51x 103 V/W |
250x 103 V/W |
40 x 103 V/W |
10x 103 V/W |
2x 103 V/W |
2x 103 V/W |
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Rise time |
30ns |
4.5ns |
1.8ns |
0.9ns |
0.6ns |
0.2ns |
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Common Mode Rejection Ratio (CMRR) |
>30 dB |
>30 dB |
>25 dB |
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Saturated Light Power |
Out of balance |
58.8uW |
12.5uW |
97.5uW |
0.38mW |
1mW |
1mW |
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Balance |
5mW |
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Coupling mode |
DC |
AC only |
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Output impedance |
50W |
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Equivalent noise power NEP |
4.1pW/√Hz |
6.9pW/√Hz |
11.2pW/√Hz |
17.9 pW/√Hz |
15pW/√Hz |
12.9pW/√Hz |
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Total Output Noise Voltage * |
<0.3mVRMS |
<15mVRMS |
< 6.3mVRMS |
<4mVRMS |
<1mVRMS |
<1mVRMS |
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InGaAs balanced photodetector module (spatial light input) |
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Parameter |
HC-BPRM-BW-I-FS |
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Detector type |
InGaAs / PIN |
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Optical input |
Free Space |
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Wavelength range |
800-1700nm |
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Peak responsivity |
0.9A/W @ 1550 nm |
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Photosensitive surface diameter |
500mm |
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Bandwidth (3dB) |
RF OUTPUT |
75MHz |
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Conversion gain @ high impedance |
10x 103 V/W |
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Rise time |
4.7ns |
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Common Mode Rejection Ratio (CMRR) |
>30 dB |
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Saturated optical power |
Out of balance |
0.38mW |
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Balance |
5mW |
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Coupling mode |
DC |
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Output impedance |
50W |
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Equivalent noise power NEP |
54.4 pW/√Hz |
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Total Output Noise Voltage * |
< 2.1 mVRMS |
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General parameters
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Parameter |
Typical value |
Remark |
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RF out terminal |
Output electrical signal interface |
SMA(Female) |
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Output DC Bias |
+/-3mV |
No input |
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Maximum output voltage |
±3.8V |
High resistance |
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±1.9V |
50W |
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Monitoring terminal (optional) |
Bandwidth |
DC-1MHz |
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Output voltage |
0-5V |
@ High resistance |
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Gain |
10KV/W |
@1550nm |
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Resistance |
100W |
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Saturated optical power |
0.5mW |
@ High resistance |
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Power connector |
Aviation plug |
2P or 4P |
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Power supply |
DC 12V |
Operating voltage |
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<100mA |
Operating current |
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Photodamage threshold |
10mW |
CW or peak power |
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Operating temperature |
-20~65°C |
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Characteristic curve
Typical spectral response
Mechanical dimensions in mm
Fiber optic interface
Space optical interface (with adapter board to adapt to M4 optical connector)
Optical interface (with output monitoring)
Power supply interface (without monitoring output and with monitoring output)
Ordering Information HC-BPRM-BW-S/I-FA/FS-XX
BW — Operating bandwidth
S/I --- S: Si; I: InGaAs
FA/FS --- FA: FC/APC; FS: Free Space
XX--Other special requirements
