Key feature summary

• Long wavelength range: 1500 to 3400 nm

• Gas purging ports to reduce water vapor effects

• Built-In cut filter for high order diffracted light

• Double Speed Mode to further enhance fast measurement speed

• High sensitivity down to -65 dBm

• High resolution to 0.1 nm

• Wide close-in dynamic range (55dB)

• Fast auto-calibration

• Free space optical input for maximum flexibility, low maintenance, and high reliability  

• Applicable to single-mode and multimode fibers

• Excellent performance for environmental gas sensing Laser Spectroscopy 

• Indispensable tool for R&D and manufacturing of optical devices in the wavelength range from telecom band to 3.4μm 

New Features

Purge feature

Due to the high resolution and sensitivity of the AQ6376E, it can actually detect the presence of water molecules in the air. The water vapor is detected in the upper Near-IR wavelength region and could overlap with or mask the spectral characteristics of the actual device under test in that particular region.

By continuously supplying a pure purge gas such as nitrogen to the monochromator through the ports on the back panel, the AQ6376E can reduce the influence of water vapor absorptions and provide more reliable and accurate measurements than ever before.

Built-in cut filter for high order diffracted light

Due to the diffractive technology used, the monochromator in some circumstances could generate high order diffracted light, which appears at wavelengths equal to the integral multiple of input wavelengths.

By cutting incoming light below 1500 nm with the built-in filter, the AQ6376E drastically reduces the influence of high order diffracted light on the measurement. Thus, the measured data are always reliable and replicate the real signal under test.

Double speed mode

Increases the sweep speed up to 2 times compared to the standard sweep mode, with only a 2 dB penalty to the standard sensitivity value.

Long Wavelength Range: from 1500nm to 3400nm

The AQ6376E covers not only the wavelength span used in communications, but also the 3µm region which is used for environmental sensing, medical, biology and industrial applications.

High Sensitivity: down to -65dBm

The AQ6376E can measure optical power from +13dBm down to -65dBm thanks to its high-dynamic and very low noise components and circuits used for photo detection. This enables precise measurements of both high power and low power sources.

Measurement sensitivity can be chosen among 7 values according to the measurement speed required by the specific test to be performed.

High Resolution & Wide Dynamic Range

The AQ6376E uses a double-pass monochromator structure to achieve high wavelength resolution (0.1 nm) and wide close-in dynamic range (55 dB). Thus, closely allocated signals and noise can be separately measured.

High speed Measurement

GREATER EFFICIENCY 

High Speed Sweep

With a proprietary sweep technique the AQ6376E achieves a much faster sweep speed than conventional measurement systems, which use a monochromator. Max. sweep time is only 0.5 sec. for 100 nm span.

Fast command processing and data transfer

Applying a fast microprocessor, the AQ6376E achieves very fast command processing speed and Ethernet interface provides up to 100 times faster data transfer speed than GP-IB.

Fast auto-calibration

The AQ6376E has a built-in reference light source for wavelength calibration and optical alignment of the monochromator components, allowing it to deliver always-accurate measurements. 
The calibration and alignment process takes less on the unit take than 2 minutes and is fully automatic. 

NOTE: The wavelength calibration can also be performed by using an external reference source.

Free-Space Optical Input

The AQ6376E uses a free-space optical input structure, i.e. no fiber is mounted inside the instrument.

This smart solution is:

• WORRY-FREE, as no internal fiber can be scratched or get dirty

• MAINTENANCE-FREE, as no internal fiber has to be cleaned

• VERSATILE, as the instrument accepts both /PC and /APC connectors

• DUAL PURPOSE, as the instrument accepts both Single-Mode and Multi-Mode fibers without being affected by the high insertion loss from MM-SM fibers matching

DUT-oriented test apps simplify the test process

The appplication mode (APP) transforms an OSA into a versatile machine dedicated to a device under test (DUT). APP mode provides a DUT-specific user interface that navigates the user from configuration settings to test result output without worrying with other OSA settings. The AQ6376E comes pre-installed with several standard applications including DFB-LD testing, FP-LD testing and SC light source testing. Additional optional applications are available for download from the Yokogawa Test&Measurement website.

Measurement applications and user-friendly multi-touch operation and connectivity

With over four decades perfecting the user experience, the Precision Makers of Yokogawa Test&Measurement developed the AQ6376E with an easy-to-use front-panel design and intuitive operability.

Large LCD touchscreen

The high-resolution, responsive 10.4-inch multi-touch capacitive touchscreen makes device operation simple and intuitive. Easily change the view and measurement conditions and perform analysis with just a touch. In the optical spectrum view, the waveform view can be zoomed or shifted by a simple tap and drag.

Enhanced function keys

Operability is improved with the addition of frequently-used function keys on the front panel. These include sweep control (Auto/Single/Repeat/Stop), resolution, and sensitivity. The function keys can also be displayed as a pop-up on the screen.

Passive components (FBG)

In conjunction with a broadband light sources such as ASE, SLD, or Super Continuum (SC), the AQ6376E enables higher resolution and wider dynamic range measurements and performs evaluation of passive devices including FBG. In addition, the built-in optical filter analysis function simultaneously reports peak/bottom wavelength, level, crosstalk, and ripple width.

USB ports

The AQ6376E has USB ports that are compatible with a USB storage device, mouse, and keyboard. The file feature allows users to save data and screenshots to internal memory or USB storage for use in creating test reports. By connecting a mouse or keyboard to the USB port, you can comfortably operate the AQ6376E as if you were operating a PC.

Data access through LAN

The standard LAN port allows convenient access to files stored in the internal memory and enables remote updates for firmware from a PC.

A complete suite of connection interfaces

For the first time, the AQ6376E is now equipped with Gas Purging Input and Output ports for the first time along with a suite of electrical interfaces (GP-IB,, USB, RJ-45 Ethernet, SVGA video output, analog (voltage) output, trigger input & output) which allow the user to easily operate it locally in the lab as well as remotely.

Front View

USB interfaces
2 ports are available on the front panel, supporting keyboard, mouse, memory stick and external HDD.

Note: USB ports can't be used for instrument's remote control. For this purpose the instrument has an Ethernet RJ45 port on its back panel.

Rear View