Tunable Bandpass Filter

Tunable Bandpass Filter

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Tunable Bandpass Filter


GouMax MTF-100 series is a high-speed tunable bandpass filter. As a two-port optical module, the in-
put port receives the light of wideband multiple wavelengths, and only a small portion of incident signal
within passband is allowed to pass through the filter and is directed to the output port. The central wave-
length of the selected band can be tuned to any position within the operation wavelength range. In our
flexible design, the pass bandwidth of transmission, and the wavelength tuning range can be customized.
Without the moving part, the voltage controlled filter has fast tuning speed, and features billions of cy-
cles, and small form factor.

The MTF-100 is used as a wavelength scanning engine for an optical spectrum analyzer (OSA), ASE
suppression filter to enhance the laser’s signal-noise ratio (SNR), and system diagnosis in the optical
communication system.



Tunable Bandpass Filters                                                           

Key Features                                                       Key Applications
 
      High-speed wavelength tuning                      Engine for optical spectrum analyzer
  Wide operation wavelength range                 ASE noise suppression
  Flat-top/Gaussian filter shapes                     Optical channel diagnosis
  No moving parts                                           Test and measurement instrument
  > 1 billion cycles                                              Channel selection of wavelength locker


            Product Specifications and Key Parameters

Parameter
Unit
Specification
Note
Wavelength Tuning Range
nm
1525 ~ 1570 
Single band example
Passband Width @ -1.0 dB
GHz
≥16
Typical 17.5 GHz
Passband Width @ -3.0 dB
GHz
≥27
Typical 30 GHz
Passband Width @ -20 dB
GHz
≤96

Peak Insertion Loss
dB
< 4.0
Without connectors
Polarization Dependent Loss
dB
< 0.3
At CW
Non-Adjacent Isolation 
dB
≥ 30

Chromatic Dispersion
ps/nm
< ±10
Within CW ±5 GHz
Polarization Mode Dispersion
ps
< 0.1

Wavelength Tuning Resolution
GHz
< 1.5

Wavelength Setting Error
GHz
< ±4

Wavelength Setting Repeatability
GHz
±1

Wavelength Temperature Dependence
pm/°C
< ±1

Return Loss
dB
> 40

Maximum Input Optical Power
mW
300

Tuning Speed
s
< 0.5
Channel to channel

Notes:
1) Flat-top and Gaussian filter shapes are available.
2) Single band version: O/E/S/C/L-band.
3) Dual band version: O+E-band, C+L-band.
4) Full band: 1250~1650 nm, or customized.


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