Compare Model Drawings, CAD & Specs Availability Price
Balanced Fiber-Optic Receiver, Silicon, 320-1000 nm, 650 MHz, FC Connector
$1,994
In Stock
In Stock
Balanced Optical Receiver, Silicon, 320-1000 nm, 650 MHz, Free Space
$1,984
In Stock
In Stock
Balanced Fiber-Optic Receiver, InGaAs, 900-1700 nm, 800 MHz, FC Connector
$1,994
In Stock
In Stock
Balanced Optical Receiver, InGaAs, 900-1700 nm, 800 MHz, Free Space
$1,984
In Stock
In Stock

Specifications

Features

Reduces Common-Mode Noise by 25 dB

The 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.

Large Bandwidth

The photodetectors are carefully chosen for their well-matched frequency responses and are mounted at 90° with respect to each other (one on each side of the box versus both on the same panel). This unique packaging allows for closer photodetector spacing and, therefore, high bandwidth performance up to 800 MHz.

Typical frequency response and noise spectrum for Model 1607-AC.

Convenient Photocurrent Monitor Outputs

In addition to the RF output, these balanced photoreceivers have three low-frequency monitor outputs. These monitor outputs can be used to help align light onto the photodiodes, perform low frequency diagnostics, and make manually equalizing the power between the signal and reference beams easier.

Measuring Absorption Properties Application

The Model 1607-AC balanced photoreceiver is especially useful in measuring absorption properties. Here, a probe beam is focused onto one of the photodetectors while the other detects a reference beam.