Laser 2000
Home > Products > Test & Measurement > Laser Spectrometers & Wavemeters > CW Wavelength Meters > Optical Wavelength Meter
338 Series Optical Wavelength Meter
Back Panel

Related products

Optical Wavelength Meter

Two versions are offered. The model 338A is the most precise, providing an accuracy of ± 0.3 pm. For less exacting test requirements, the 338B system is a lower-priced alternative with a wavelength accuracy of ± 1.0 pm.

Bristol Instruments
Add to Quote
Ask the Expert

Reliably accurate optical transceiver testing

338 Series Optical Wavelength Meter

  • Fast measurement rate of 25 Hz
  • Wavelength accuracy as high as ± 0.3 pm
  • Continuous calibration with a built-in wavelength standard
  • Measurement confidence level of ≥ 99.7%
  • Traceable to NIST standards
  • Power measured to an accuracy of ± 0.5 dB
  • Wavelength range from 1270 to 1680 nm
  • Operates with CW and modulated signals
  • Convenient touch-screen display reports measurement data in a variety of formats
  • Interfacing via SCPI using USB, Ethernet, or GPIB
  • Rugged design for manufacturing environments
  • Five-year warranty covers all parts and labour

 

Fast and cost-effective wavelength measurement
The 338 Series Optical Wavelength Meter from Bristol Instruments combines speed and affordability to address the most important requirements of optical transceiver manufacturers.

The model 338 has a high measurement rate of 25 Hz that results in reduced testing times and greater production throughput. Its affordable price point, along with a five-year warranty, provides the lowest cost of ownership compared with similar systems.

Guaranteed accuracy with continuous calibration
The 338 Optical Wavelength Meter uses proven Michelson interferometer-based technology with fast Fourier transform analysis to accurately measure the wavelength of CW and modulated signals.

Continuous calibration with a built-in wavelength standard maintains the performance of the 338 Optical Wavelength Meter over long periods of time. What’s more, every 338 system is rigorously tested with laser sources that are traceable to NIST standards.

Designed for convenience, built to last
Operation of the 338 Series Optical Wavelength Meter is straightforward.

The optical signal enters the model 338 through an FC (UPC or APC) fibre optic connector on the front panel. The system’s high sensitivity results in an input power requirement as low as -30 dBm (1 µW). Automatic attenuation instantly adjusts the signal for optimum performance.

A convenient touch-screen display on the instrument’s front panel controls the 338 system and reports the measured wavelength and power. The measurement data can also be sent to a PC using a library of SCPI commands via standard USB or Ethernet interface, or an optional GPIB interface.

The rugged design of the 338 Optical Wavelength Meter provides long-term reliable operation that is backed by a five-year warranty covering all parts and labour.

Specifications
Model 338A 338B
Optical Signal CW and modulated
Wavelength
Range 1270 – 1680 nm (179 – 236 THz)
Accuracy [1], [2] ± 0.2 parts per million (± 0.3 pm at 1550 nm) ± 0.65 parts per million (± 1.0 pm at 1550 nm)
Repeatability [3], [4], [5] ± 0.03 parts per million (± 0.05 pm at 1550 nm) ± 0.1 parts per million (± 0.15 pm at 1550 nm)
Calibration Continuous – built-in stabilised single-frequency HeNe laser Continuous – built-in standard HeNe laser
Display Resolution 0.00001 nm 0.0001 nm
Units [6] nm, cm-1, THz
Power
Calibration Accuracy ± 0.5 dB (± 30 nm from 1310 and 1550 nm)
Linearity [3] ± 0.3 dB (1270 – 1600 nm)
Polorisation Dependence ± 0.5 dB (1270 – 1600 nm)
Display Resolution 0.01 dB
Units dBm, mW, μW
Optical Input Signal
Maximum Bandwidth [7] 10 GHz (80 pm at 1550 nm)
Sensitivity -30 dBm (1270 nm to 1650 nm), -25 dBm (1650 nm to 1680 nm)
Maximum Power + 10 dBm (displayed level), + 18 dBm (safe level)
Return Loss 35 dB
Measurement Rate (Time) 25 Hz (0.04 s)
Inputs/Outputs
Optical Input 9/125 μm single-mode fibre (FC/UPC or FC/APC)
Instrument Interface Library of commands (SCPI) via USB 2.0, Ethernet, and optional GPIB
Environmental [3]
Warm-Up Time < 15 minutes None
Temperature +15°C to +30°C (-10°C to +70°C storage)
Pressure 500 – 900 mm Hg
Humidity ≤ 90% R.H. at + 40°C (no condensation)
Dimensions 89 mm x 432 mm x 381 mm
Weight 7.65 kg
Power Requirements 90 – 264 VAC, 47 – 63 Hz, 80 VA max
Warranty 5 years (parts and labour)
[1] Defined as measurement uncertainty, or maximum wavelength error, with a confidence level of ≥ 99.7%.
[2] Traceable to NIST standard (SRM 2517a).
[3] Characteristic performance, but non-warranted.
[4] For 338A, standard deviation for a 10 minute measurement period.
[5] For 338B, standard deviation for a 1 minute measurement period. Maximum long-term measurement variation < ± 0.4 ppm.
[6] Data in units of nm and cm-1 are given as vacuum values.
[7] Bandwidth is FWHM.
338 Series Datasheet
BACK
TO TOP

Request a Demo

338 Series

Ask the Expert

If you’re interested in the products shown here, or have questions about something you can’t find on our website, please get in touch through the form below.

Our knowledgeable sales team will be happy to help. We can normally source exactly what you need, or work with you to come up with custom solutions.

Alternatively, just call +44 (0) 1933 461 666 and ask to speak to the Photonics team.