The AQ6370D is the latest iteration of the most popular Telecom class OSA from Yokogawa. It offers a versatile wavelength range of 600 nm to 1700 nm ideally suited for both Telecommunications and general purpose applications. The unique free space input design allows testing of both DWDM class singlemode and VCSEL sourced multi-mode fibers in one single model.

Newly added functions include data logging, gate sampling,resolution calibration, an advanced marker function and an enhanced auto-sweep mode.

World-Class Optical Performance

Wavelength range: 600 to 1700nm
High wavelength accuracy: ±0.01nm
High wavelength resolution: 0.02nm
Wide dynamic range: 78dB typ.
Wide level range: +20 to -90dBm
Fast measurement: 0.2 sec. (100nm span)
Applicable to single-mode and multimode fibers

Standard and High-Performance Models

There are two models available, Standard and High performance. The High performance model provides even higher wavelength accuracy and dynamic range.

High wavelength resolution: 0.02nm

High Wavelength Accuracy: ±0.01nm

High performance model: ±0.01nm (C band)
Standard model: ±0.02nm (C+L band)

Wavelength Range	Standard (-12)	High Performance (-22)
1520 to 1580 nm 1580 to 1620 nm 1450 to 1520 nm Full range	±0.02 nm ±0.02 nm ±0.04 nm ±0.1 nm	±0.01 nm ±0.02 nm ±0.04 nm ±0.1 nm

Ultra-High Dynamic Range: 78dB typ.

With the reduced stray-light in the monochromator, AQ6370D achieves ultra-high dynamic range

of typ. 78dB.

	Standard (-12)	High Performance (-22)
Peak± 1.0 nm Peak± 0.4 nm Peak± 0.2 nm	73 dB 62 dB 45 dB	73 dB (Typ.78dB) 64 dB (Typ.70dB) 50 dB (Typ.55dB)
*Resolution setting 0.05 nm

Sharper Filter Edge

The high performance model can also achieve a higher dynamic range within 0.2nm of the peak wavelength. With the sharper spectral characteristics of the monochromator, spectral signals in close proximity can be separated clearly and measured accurately.

	Standard (-12)	High Performance (-22)
Peak± 0.2 nm Peak± 0.1 nm	55 dB 37 dB	58 dB (Typ.60dB) 45 dB (Typ.50dB)
*Resolution setting 0.02 nm

Stray-light suppression ratio: 80dB typ.

This new specification provides stray-light suppression capability when High dynamic mode, usually taking longer measurement time, is not used. The AQ6370D contributes to shortening the measurement time with the high stray light suppression ratio.

Standard (AQ6370D-12)	High Performance (AQ6370D-22)
73dB	76dB (Typ. 80dB)
*Resolution setting 0.1nm

Wide Level Range: +20DBm to -90dBm

The AQ6370D can measure high power sources such as optical amplifiers and pump lasers for Raman amplifiers, and very weak optical signals as well. Measurement sensitivity can be chosen from seven categories according to test applications and measurement speed requirements.

Improved level sensitivity: -85dBm (1000 to 1300nm)
Smoothing Function - Reduce noise on the measured spectrum
High dynamic mode - Obtain a better dynamic range by reducing the influence of stray-light, which is caused when the input is a strong optical signal.

Free Space Input

Multimode and single mode fiber on the same OSA.
AQ6370D's low insertion loss for multimode fiber is also beneficial to maintain the excellent measurement efficiency.

Small insertion loss variation at the input
connector increases measurement repeatability.

No damage connecting fibers
because there is no physical contact.

APC level correction
The APC level correction function corrects the level offset caused by an insertion loss of angled PC connector.

Excellent Efficiency

With an advanced monochromator, faster electrical circuits, and noise reduction techniques, the AQ6370D achieves fast measurement speed even when measuring a steep spectrum from DFB-LD or DWDM signals, or when measuring a low power signal from a broadband light source.

Fast Remote Interface (Ethernet, GP-IB)

The 50,001 data sampling points expands measurement range in a single sweep while keeping a high wavelength resolution. This makes your measurement easier and more efficient than conventional systems.

Trace Zooming

Change display conditions, such as center wavelength and span, by clicking and dragging the mouse.
Enlarge your area of interest instantly and move it at will.

Mouse & Keyboard Operation

Front panel operation proven intuitive and easy to use by our many of users.
Even easier with a mouse.
The keyboard helps enter labels and file names.

Easy Data Handling

USB Storage
USB interfaces support large-capacity removable memory and hard disk drives.

512MB Internal Memory
for over 20,000 traces

All-at-Once Trace Filing
All seven traces can be saved in one file at once.

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