VectorStar™ Opto-Electronic Network Analyzers

MN4765B O/E Calibration Module (70 kHz to 40/70/110/145 GHz)

The MN4765B is a characterized, unamplified high-speed photodiode module. It is used as an optical receiver with the Anritsu MS4640B Series VectorStar VNAs to perform highly accurate and stable optoelectronic measurements of both modulators (E/O) and photoreceivers (O/E). The MN4765B is the base calibration module part number only. Customers are required to also order an option to configure the bandwidth and wavelength coverage.

The MN4765B with option 70 configures the calibration module for 70 kHz to 70 GHz frequency and 1550 nm wavelength coverage. This option consists of a high-speed photodiode that converts modulated optical signals to electrical signals and includes additional circuitry for temperature and bias stability. The high-speed photodiode has exceptional bandwidth response to 70 GHz and a typical responsivity of 0.7 A/W. Option 71 is configured from 70 kHz to 70 GHz and 1310 nm, while Option 72 is configured from 70 kHz to 70 GHz at both 1310 and 1550 nm.

Option 110 configures the module for 70 kHz to 110 GHz and 1550 nm. Option 111 configures the module for 70 kHz to 110 GHz and 1310 nm, while Option 112 configures the module from 70 kHz to 110 GHz at both 1310 and 1550 nm.

The MN4765B with Option 140 configures the module for 70 kHz to 145 GHz and 1550 nm.The MN4765B is the first O/E module with traceability to a recognized National Metrology Institute up to 145 GHz and all O/E modules are characterized in both magnitude and phase using a NIST derived calibration standard up to 110 GHz.

Note: MN4765B is the base calibration module part number only. Customers are required to also order an option to configure the bandwidth and wavelength coverage. These options consist of a high-speed photodiode that converts modulated optical signals to electrical signals, and includes additional circuitry for temperature and bias stability.

Configuration Options:

Additional Features

• Fast and accurate optoelectronic measurements- The MS4640B VectorStar series VNAs, when calibrated using the MN4765B module, enable error-corrected Transfer Function, Group Delay, and Return Loss measurements of E/O and O/E components and subsystems
• National Institute of Standards and Technology derived characterization - Magnitude and phase characterization is obtained using a primary standard characterized by NIST and held in the Anritsu Calibration Lab. The magnitude and phase data is provided on a USB drive with the module
• Temperature Stable - The MN4765B is thermally stabilized to eliminate drift in photodiode performance over temperature
• Internal Biasing - Accurate bias voltage to the photodiode is maintained internally. An external, multi-country, AC adapter is included for easy operation
• High Linearity - Linear operating range to +6 dBm for transfer function measurement uncertainties of <0.45 dB @ 50 GHz and <0.7 dB @ 70 GHz (typical specifications for MN4765B-0070)
• High Responsivity - 0.7 A/W and 0.5 A/W (Typical specification for MN4765B-0070 and -0110 respectively)

For additional information and specifications:

• Technical Datasheet
• MN4765B O/E Calibration Module product page

Opto-Electronic Features

• Fast and accurate opto-electronic measurements — The VectorStar ME7848A 200 series ONA enables error-corrected transfer function, group delay, and return loss measurements of E/O and O/E components and subsystems.
• MN4765B O/E calibration module — The O/E calibration module is a thermally stabilized photodiode reference standard detector that can eliminate drift over temperature. Accurate bias voltage to the photodiode is maintained internally.
• MN4775A E/O converter — The E/O converter includes a lithium niobate (LiNbO3) modulator stabilized by a fully automatic bias controller and a tunable or fixed wavelength laser source. Excellent converter stability ensures characteristics remain consistent during measurement of opto-electronic DUT detectors and receivers.
• National Institute of Standards and Technology (NIST) derived characterization — Magnitude and phase characterization of the O/E calibration module is obtained using a primary standard characterized by NIST and held in the Anritsu Calibration Lab.
• Internal VNA de-embedding for simplified calibration — The built-in application menus provide instructions that guide the user through the set-up and calibrations required for making E/O, O/O, and O/E measurements.
• Excellent stability and repeatability — Use of full 12-term calibration with de-embedding results in stable and repeatable measurements of opto-electronic devices using the VectorStar VNA.
• Modularity and upgradeability — The VectorStar ME7848A ONA can be easily modified to a different wavelength by adding the appropriate MN4775A E/O converter and MN4765B O/E calibration detector. The VectorStar ME7838A 100 series can be upgraded to a 200 series by including the appropriate MN4775A E/O converter.

Spectrum Analyzer Option

• SPA available from 70KHz to 20/40/70/110/125/145 and 220GHz. Also available for banded configuration to 1.1THz.
• Dual SPA mode available: suitable for Mixers/Amplifier/ Harmonics /Spurious testing.
• SPA available on all ports. User can define which port to use as SPA port.
• Several detection types available in classical mode: Peak, minimum, RMS, Mean.
• Various math functions can be applied on SPA mode like Min hold/max hold/ user defined equations.
• Sources and receivers can be independently configured. Can be used as Tracking Generator.
• For units that have a dual source, a dual drive option is available. Support for external source control also possible.
• Phase synchronization for units with Dual source available. This feature allows users to control and configure the phase between the two sources.
• Source and receiver attenuator available with VNA can be activated in SPA mode. Recommendation to use option 62 (with attenuator on receiver side) for measuring the spectrum content of high-power devices.
• Software option: easy to install and upgrade existing user equipment.

Other Features

• Broadest frequency span from a single coaxial test port covering 70 kHz to 70 GHz in a single instrument and 70 kHz to 145 GHz in the Broadband configuration. Extendable to 1.1 THz
• Universal Fixture Extraction (UFX) software option provides advanced de-embedding tools for test fixture extraction.
• IMDView™ software coupled with the internal combiner option offers the ability to switch from S parameters to IMD measurements in a single connection
• Highest performance pulse measurements— PulseView™ offers 2.5 ns pulse resolution with 100 dB dynamic range
• 4-port single-ended or balanced measurements using DifferentialView™ analysis
• Internal trace-based eye diagram option provides the ability to display Time Domain, S-Parameters, and Eye Diagram analysis with active sweep updates
• Superior Dynamic Range - up to 142 dB
• High available power - up to +14 dBm
• Best test port characteristic performance - up to 50 dB in Directivity
• Best time domain analysis
• Fast and accurate optoelectronic measurements from 70 kHz to 40, 70 GHz and 110 GHz, at 850, 1060, 1310 and 1550 nm wavelengths, using MN4765B O/E Calibration module