Balanced Photoreceiver

------ The KY-BPRM series

Key Features

lSpectral Range 400-1700nm

lVarious 3dB band-width options

lWith output monitoring

lRise time Min.<0.2ns

lCMRR>30dB

lLow noise

lSingle power supply DC 12V

lDimensions 47x42x20mm

lCan be customized

Applications

lNanosecond optical pulse detection

lLaser radar

lBrillouin Optical Fiber Sensing System

lf-OTDR

lOCT(Optical coherent tomography)

Options

lPhotosensitive surface

lBand-width

lGain

lOutput Coupling

Description

 The KY-BPRM series balanced photoreceiver 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 12V, and the input optical interface is optional for optic fiber or space incidence. The electric signal is SMA output, mainly used in nanosecond optical pulse detection, laser radar, optical coherent tomography,fiber optic sensing systems and other fields.

Block diagram

Balanced Photoreceiver

Performance Parameters

Si Balanced Photoreceiver

PN

KY-BPRM-BW-S-FA/FS

Detector type

Si / PIN

Input

Free Space or FC/APC

Spectral range

400-1100nm

Peak responsivity

0.5 A/W @ 905 nm

Detector diameter

1.2mm

0.5 mm

CMRR

>25 dB (typ. >30 dB)


Band-width(3dB)

RF OUTPUT

10MHz

350MHz

Peak Gain@ High resistance

26x103V/W

5x 103 V/W

Rise time

30ns

1ns

Saturated optical power

Unbalanced

115uW

0.76mW

Balanced

5mW

Coupling

DC/AC

Impedance

50W

Equivalent noise power NEP

7.0 pW/√Hz

42.7 pW/√Hz

Total output noise voltage

<0.3mVRMS

<4mVRMS

InGaAs Balanced Photoreceiver (Fiber Input)

PN

KY-BPRM-BW-I--FA

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

InGaAs Balanced Photoreceiver (Free Space Input)

PN

KY-BPRM-BW-I-FS

Detector type

InGaAs / PIN

Input

Free Space

Spectral range

800-1700nm

Peak responsivity

0.9A/W @ 1550 nm

Detector diameter

500mm

Band-width(3dB)

RF OUTPUT

75MHz

Peak Gain@ High resistance

10x 103 V/W

Rise time

4.7ns

CMRR

>30 dB

Saturated optical power

Unbalanced

0.38mW

Balanced

5mW

Coupling

DC

Impedance

50W

Equivalent noise power NEP

54.4 pW/√Hz

Total output noise voltage

< 2.1 mVRMS















General Parameters

Parameters

Typ.

Remarks

RF OUT side

Output electrical signal interface

SMA(Female)


Output DC offset

+/-3mV

No input

Maximum output voltage

±3.8V

High resistance

±1.9V

50W

Power interface

Aviation plug


Powered by

DC 12V

Operating Voltage

<100mA

Working current

Light damage threshold

10mW

CW or Peak power

Operating temperature

-20~65°C


Characteristic Curve

Balanced Photoreceiver

Si Spectral response

Balanced Photoreceiver

InGaAs Spectral response

Dimensions(Unit:mm)

Balanced Photoreceiver

optical fiber interface

Balanced Photoreceiver Balanced Photoreceiver 

Space optical interface (with adapter plate for M4 optical post)

Ordering Information

KY – BPRM - BW- S/I - FA/FS - XX

BW---Band-width

S/I --- S: Si; I: InGaAs

FA/FS --- FA: FC/APC FS: Free Space

XX --- Other requirements

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