Product Brief

Features

  • Rapid arbitrary wavelength switching as fast as 2us/step
  • User configurable look-up table (10k points across full tuning range)
  • Available in C, O, and U bands
  • Compact, fully self-contained module
  • Interfaced via USB or fast (25MHz) SPI
  • Logic output for synchronizing to sweep
  • Programmable logic output for synchronizing to each wavelength step (sample window)

APPLICATIONS

  • Test and Measurement
  • Fiber Sensing
  • Atmospheric Gas Sensing

Notes

1.  Gap-free continuous wavelength tuning range centered about nominal wavelength

2.  Case temperature kept at 25°C

3.  Power variation across all wavelengths

4.  Maximum step rate when auto stepping, can dwell on any wavelength indefinitely

5.  Portion of step period required for wavelength settling

6.  Can be programmed in 10ns steps with the maximum width equal to the step period

7.  Varies with case temperature (<100mA at 25°C)

8.  Time to set new wavelength when in direct wavelength access mode using USB interface

9.  Time to set new wavelength when in direct wavelength access mode using Host SPI interface

10.  Time to set new wavelength when in direct wavelength access mode using DAC SPI interface

Overview

The FP4209 Fast Random-Access Tunable Laser (InstaTune) is a compact, self-contained tunable laser module capable of emitting any wavelength within the specified range and resolution available for a given band.  Wavelength switching from any wavelength to any wavelength in as little as two microseconds while fully meeting specifications is supported.  The module can be operated in scenarios where a host system is commanding wavelength changes as well as stand-alone where the module deterministically self-steps through a user defined sequence of wavelengths, thus generating an arbitrary waveform.  Alternatively, the module can emit a programmable static wavelength.  USB and SPI interfaces are provided for configuration and control.  An evaluation board is also available.

Product Data Sheet

Specifications

  ValueUnit
General Parameter
Center Wavelength
FP4209-O1
FP4209-O2
FP4209-O3
FP4209-C1
FP4209-L1
FP4209-U1
FP4209-U2
1280
1310
1340
1550
1590
1650
1690
nm
nm
nm
nm
nm
nm
nm
Tuning Range
FP4209-OX
FP4209-CX
FP4209-LX
FP4209-UX
35
40
40
45
nm
nm
nm
nm
Absolute Wavelength Accuracy±15pm
Wavelength Stability (24hr) ±5pm
Output Power≥5mW
Output Power Flatness±0.25dB
Tuning ResolutionTuning Range / 10k pointsnm
SMSR>30dB
Wavelength Settling Time<200ns
Laser Linewidth<50MHz
Case Temperature Operating Range10°C - 55°CNon-condensing
Case Temperature Storage Range-10°C - 70°CNon-condensing
Sweeping Parameter
Number Wavelength Steps (min)1
Number Wavelength Steps (max)10000
Wavelength Step Period (min)2us
Wavelength Step Period (max)655.35us
Wavelength Setting Time<200ns
SweepSync TrainingActive-low pulse generated at the beginning of the specified wavelength sequence.
StepSync TimingActive-low pulse generated every laser wavelength step.
Electrical Parameter
Power
3.3V Supply Current
3.8V Supply Current
5.0V Supply Current
200
1000
1500
mA
mA
mA
Communication
Host USB Command8
Host SPI Command9
DAC SPI Command10
≤1
<4
<4
ms
us
us