80 MHz Balanced Optical Receivers

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Overview

The 80 MHz Large Area Adjustable Gain Balanced Photoreceivers are effective in reducing common-mode noise so that you can see your small signal. With a well-balanced combination of gain, bandwidth, and low noise, these photoreceivers are extremely flexible and are ideal for coherent heterodyne-detection applications including doppler LIDAR and optical coherence tomography.

Reduces common-mode noise by 25 dB
High gain with low noise
Visible and near-IR versions

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Products

Compare	Model	Compatibility	rankScore	Optical Input	Detector Diameter	Wavelength Range	3 dB Bandwidth	Common Mode Rejection	Availability	Price	Brand
1807-FC Balanced Fiber-Optic Receiver, 320-1000 nm Silicon Detectors, 80 MHz $2,120 In Stock	1807-FC Balanced Fiber-Optic Receiver, 320-1000 nm Silicon Detectors, 80 MHz	UNIVERSAL	1.0	Fiber-optic	0.4 mm	320-1000 nm	DC to 80 MHz	25 dB	In Stock	$2,120	New Focus
1807-FS Balanced Optical Receiver, 320-1000 nm Silicon Detector, 80 MHz, Free Space $2,120 1 Week	1807-FS Balanced Optical Receiver, 320-1000 nm Silicon Detector, 80 MHz, Free Space	UNIVERSAL	1.0	Free Space	0.4 mm	320-1000 nm	DC to 80 MHz	25 dB	1 Week	$2,120	New Focus
1817-FC Balanced Fiber-Optic Receiver, 900-1700 nm InGaAs Detector, 80 MHz $2,120 2 Weeks	1817-FC Balanced Fiber-Optic Receiver, 900-1700 nm InGaAs Detector, 80 MHz	UNIVERSAL	1.0	Fiber-optic	0.15 mm	900-1700 nm	DC to 80 MHz	25 dB	2 Weeks	$2,120	New Focus
1817-FS Balanced Optical Receiver, 900-1700 nm InGaAs Detector, 80 MHz, Free Space $2,120 In Stock	1817-FS Balanced Optical Receiver, 900-1700 nm InGaAs Detector, 80 MHz, Free Space	UNIVERSAL	1.0	Free Space	0.15 mm	900-1700 nm	DC to 80 MHz	25 dB	In Stock	$2,120	New Focus

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Specifications

Models	1807-FC	1817-FC
Optical Input	Fiber-optic	Fiber-optic
Detector Material	Silicon	InGaAs
Detector Type	PIN	PIN
Detector Diameter	0.4 mm	0.15 mm
Wavelength Range	320-1000 nm	900-1700 nm
3 dB Bandwidth	DC to 80 MHz	DC to 80 MHz
Common Mode Rejection	25 dB	25 dB
Rise Time	3 ns	3 ns
Maximum Conversion Gain	2 x 10⁴ V/W	4 x 10⁴ V/W
Maximum Transimpedance Gain	40 V/mA	40 V/mA
Integrated Noise	5 mVrms	5 mVrms
Peak Responsivity	0.5 A/W @ 800 nm	1.0 A/W @ 1550 nm
Saturation Power	110 µW @ 760 nm	55 µW @ 1550 nm
Maximum Differential Power	10 mW @ 760 nm	5 mW @ 1550 nm
Maximum Balanced Power per Photodiode	10 mW @ 760 nm	5 mW @ 1550 nm
Maximum RF Power	+12 dBm bei 50 Ω	+12 dBm bei 50 Ω
Output Connector	SMA	SMA
Output Impedance	33 Ω	33 Ω
Power Requirements	±15 VDC, 250 mA	±15 VDC, 250 mA
Thread Type	8-32	8-32

Notes:

The -FS models feature a free space optical input but otherwise have the same specifications as their corresponding -FC fiber-optic receiver model.

Specifications

Models	1807-FC	1817-FC
Optical Input	Fiber-optic	Fiber-optic
Detector Material	Silicon	InGaAs
Detector Type	PIN	PIN
Detector Diameter	0.4 mm	0.15 mm
Wavelength Range	320-1000 nm	900-1700 nm
3 dB Bandwidth	DC to 80 MHz	DC to 80 MHz
Common Mode Rejection	25 dB	25 dB
Rise Time	3 ns	3 ns
Maximum Conversion Gain	2 x 10⁴ V/W	4 x 10⁴ V/W
Maximum Transimpedance Gain	40 V/mA	40 V/mA
Integrated Noise	5 mVrms	5 mVrms
Peak Responsivity	0.5 A/W @ 800 nm	1.0 A/W @ 1550 nm
Saturation Power	110 µW @ 760 nm	55 µW @ 1550 nm
Maximum Differential Power	10 mW @ 760 nm	5 mW @ 1550 nm
Maximum Balanced Power per Photodiode	10 mW @ 760 nm	5 mW @ 1550 nm
Maximum RF Power	+12 dBm bei 50 Ω	+12 dBm bei 50 Ω
Output Connector	SMA	SMA
Output Impedance	33 Ω	33 Ω
Power Requirements	±15 VDC, 250 mA	±15 VDC, 250 mA
Thread Type	8-32	8-32

Notes:

The -FS models feature a free space optical input but otherwise have the same specifications as their corresponding -FC fiber-optic receiver model.

Features

Reduces Common-Mode Noise by 25 dB

Balanced photoreceivers work by subtracting the photocurrent from two well-matched photodetectors. Common-mode noise that is present on both the reference and signal beams (such as laser intensity noise) is cancelled out and doesn’t appear as part of the signal. Any imbalance between the photocurrents generated by the reference and signal photodetectors, whether intentional or unintentional, is amplified and is seen as the signal. This reduces common-mode noise by up to 25 dB so that you can see your signal.

Model 1807 Frequency Response

Model 1817 Frequency Response

Model 1807 Responsivity

Model 1817 Responsivity

High Gain and Low Noise

The 80 MHz Balanced Photoreceivers feature high gain of up to 40V/mA while maintaining very low noise.

Ideal for Balanced Photodetection

Newport's balanced optical receivers are ideal for optical detection applications that require sensitive measurements and increased signal-to-noise. Balanced photodetection is a method that can very effectively cancel common mode noise and detect small signal fluctuations on a large DC signal. Detection methods in the time domain (such as femtosecond ultrasonics and frequency modulation spectroscopy) and frequency domain (like absorption spectroscopy), and coherent heterodyne detection (such as optical coherence tomography) can be substantially improved by using Newport balanced photoreceivers and can allow detection of signals not otherwise possible with other means. For more information, please see our application note A Survey of Methods Using Balanced Photodetection.