High Resolution Optical Spectrum Analyzer AP208x Series


High resolution optical spectrum analyzer OSA (down to 5 MHz / 80 fm) in the telecommunication range and AP2080A series
Top of the line High-Resolution Optical spectrum analyzer (OSA) of APEX Technologies, the AP208x Series is equiped with the high resolution of 5 MHz/0.04 pm, 20 MHz/0.16 pm, 100 MHz/0.8 pm, as well as other resolution bandwidth from 140 MHz to 250 GHz. Analysis of optical signal in both polarization axis is possible due to the two polarization channels inside.  Thanks to the external-cavity tunable laser source inside, the scan speed is much faster than other model.

Available options:
– the optical output of the built-in Tunable Laser Source (TLS), which could also be used for component analysis (tracking funciton);
– additional PM inputs for each polarization channel;
– optical filtered ouput + polarimeter;


  • Resolution from 250 GHz to 140 MHz, 100 MHz/0.8 pm, 20 MHz/0.16 pm, 5 MHz/0.04 pm;
  • Available for C+L Band/extended C+L Band/O Band
  • Dynamic range 83 dB for C+L Band, 79 dB for O Band
  • Close-in dynamic range >60 dB @ +/-0.4 pm
  • Rectangular-shape resolution filters
  • 2 channels, one per polarization axis
  • Built-in tunable laser source
  • Component transmission/reflection analysis
  • Fast sweep


  • Advanced modulation format analysis
  • Comb generator measurement
  • Laser characterization
  • OSNR measurement
  • OFDM analysis
  • Optical sensor/component characterization

Data Handling

  • USB connectors
  • Ethernet
  • GPIB connector
  • Sensitive screen

Download: Driver Programmation Manual


  AP2081A AP2083A AP2085A AP2086A AP2087A
Wavelength measurement range 1525 nm to 1607 nm 1520 nm to 1630 nm 1265 nm to 1345 nm 1525 nm to 1607 nm
1265 nm to 1345 nm
1520 nm to 1630 nm
1265 nm to 1345 nm
Wavelength span range h 80 pm to 82 nm 80 pm to 110 nm 80 pm to 80 nm 80 pm to 82 nm 80 pm to 110 nm
Wavelength resolution(@ 3 dB) d 5MHz/0.04pm;20MHz/0.16pm;100MHz/0.8pm;140MHz/1.12pm;2GHz/16pm
Manual setting: from 500MHz to 250 GHz
Dynamic range a e 83 dB 79 dB 83 dB i
79 dB k
83 dB j
79 dB k
Close-in dynamic range a e >40 dB @ +/- 0.1 pm     >60 dB @ +/- 0.4 pm     >80 dB @ +/- 6  pm
Spurious free dynamic d 55 dB Typical (50 dB min)
Sweep time d g 35 nm/s (preliminary)
Wavelength absolute accuracy a c +/- 2 pm typical (+/- 3 pm Max.)
Measurement level range a e -73 dBm (monochromatic) to +10dBm -69 dBm to +10dBm -73 dBm to +10dBm i
-69 dBm to +10dBm k
-73 dBm to +10dBm j
-69 dBm to +10dBm k
Absolute level accuracy a b h +/- 0.3 dB (monochromatic)
Level repeatability a b d h +/- 0.2 dB
Optical input FC/PC for SM fibre
Internal absolute WL calibrator Yes
Display capabilities
X scale Wavelength in nm or frequency in GHz
Y scale Optical power in mW or dBm

Option Specifications:


Option 208x-01
Optical tunable laser source specifications
Wavelength range Identical as the wavelength measurement range of the chosen model
Spectrum line width (@ 3 dB) 500 kHz typical
Output power -8 dBm typical -12 dBm typical -8 dBm typical i
-12 dBm typical k
-8 dBm typical j
-12 dBm typical k
SMSR >45 dBc
ASE < -40 dBc over 0.1 nm
RIN < -135 dB/Hz
Wavelength stability +/- 10 pm over 1 hour
Power stability +/- 0.09 dB over 1 hour
Fibre/connector type SM fibre FC/APC connector
Option 208x-02
Optical tracking generator specifications
Dynamic e 63 dB 59 dB 63 dB i
59 dB k
63 dB j
59 dB k
Resolution e 1 MHz
Option 208x-03
Optical inputs 1x FC/PC for SM fibre input  +  2x FC/APC for PM fibre inputs
Option 208x-04
Optical filtered output + Polarimeter (C Band only)
Optical filter insertion loss a d 6 dB
Optical filter RBW (@ 3 dB) 50 GHz

a) At 1550 nm
b) At 0 dBm
c) After Wavelength calibration
d) Typical
e) Resolution 5 MHz
f) Resolution 20 MHz
g) Resolution 100 MHz
h) Resolution 140 MHz
i) 1525 nm to 1607 nm
j) 1520 nm to 1630 nm
k) 1265 nm to 1345 nm


Choose your OSA


AP201X Series
PM Input Cost Effective
AP206X Series
SM Input Cost Effective
AP207X Series
High Performance
AP208X Series
Top of the line
AP268X Series
Complex Analyzer
      High resolution optical spectrum analyzer OSA (down to 5 MHz / 80 fm) in the telecommunication range and AP2080A series High resolution optical complex spectrum analyzer OCSA (down to 5 MHz / 80 fm) in the telecommunication range; Time domain analysis available: Intensity & Phase vs. time, Eye diagram, Constellation, Chirp, BER, Chromatic dispersion, etc.
    Learn More          Learn More        Learn More        Learn More        Learn More   


Comparaison Table

  AP201x Series AP206x Series AP207x Series AP208x Series AP268x Series
Wavelength Range
O Band       X X
C Band X X X    
L Band X X X    
C + L Band X X X X X
Extended C + L Band       X X
O + C + L Band       X X
Resolution Bandwidth
Resolution Bandwidth 5MHz     X X X
20MHz X X X X X
100MHz     X X X
140MHz   X X X X
Virtual Resolution Bandwidth   X X X X
Input Fibre Type for OSA
SM Input for OSA   X X X X
PM Input for OSA X   X    
Built-in Tunable Laser Source
DFB Laser X X X    
External Cavity Laser       X X
Sweep Speed (Max.)
1.2nm/s X X X    
35nm/s       X X
Complexe Measurement
Complexe analysis (Intensity, phase, chirp vs time); Constellation & Eye diagramme         X
TLS output X X X X X
Tracking Generator X X X X X
Optical filtered output      X X X
Polarimeter     X X X
SM/PM interface X        
5 MHz Resolution instead of 20 MHz   X      
Fast sweep OSA (up to 70 nm/s)     X    
2 additional PM input       X X
Group delay and Chromatic dispersion analysis         X