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Home > Products > Tunable Optical Filters > MEMS Tunable Filter
MEMS Tunable Filter  
MEMS Tunable Filter
Optoplex MEMS Tunable Filter Full Function Module
Optoplex MEMS Tunable Filter Engine
MEMS Tunable Filter PDF Datasheet
  • Description
  • Features
  • Applications
  • Specification
Product Description - MEMS Tunable Filter

Optoplex’s MEMS Tunable Optical Filter is based on a patented micro-optic design with MEMS tuning technology. It is an integrated module consisting of a MEMS chip, micro-optics and control electronics and interface. When receiving a stream of optical signals of a plurality of wavelengths from the Input-Port (IN), the 2-port tunable optical filter directs a selected channel to the Output-Port (OUT). Wavelength (frequency) tuning is achieved by changing driving voltage applied to the MEMS chip, via the control electronics and the built-in firmware.

The MEMS tunable filter offers high optical filtering performance: low insertion loss and high isolation. Moreover, the MEMS tunable filter provides high-speed tuning that is highly demanded in many applications. The standard optical tunable filter product family includes 30- and 60-GHz typical 3dB bandwidth.

Optoplex’s MEMS tunable filter is ideal for applications from wavelength locking, optical channel monitoring and optical add/drop in optical communications; optical filtering and wavelength management in fiber sensing and spectroscopic instrumentation.

Functional block diagram of a tunable filter

Figure 1, Functional block diagram of a tunable filter



Features and Benefits of MEMS Tunable Filter
  • Athermal Design
  • Fast tuning speed
  • Compact size
  • Wide tuning range, covering entire C-, L-, C+L, or O-band
  • Low TDL and WDL
  • Low & uniform insertion loss
  • High channel isolation
  • Low power consumption
  • Telcordia GR-1221 qualified
Applications of MEMS Tunable Filter
  • Wavelength selection in DWDM systems
  • Optical performance monitoring
  • Optical spectrum analyzer
  • Tunable optical noise filtering
  • Noise suppression for optical amplifiers
Standard Specifications of MEMS Tunable Filter
Parameter1 Unit Standard C- or L-Band NB2 C-Band C+L or O-Band
Wavelength Tuning Range nm C-Band: 1527~1567; L-Band:1570~1611
C+L Band: 1521~1611; O-Band:1260~1360
Wavelength Tuning Resolution pm ~ 10pm or Calibrated to ITU grids
Passband Width @ 1.0 dB GHz > 16 - > 25
Passband Width @ 3.0 dB GHz 30 (typical) 16.5 to 23.0 60
Passband Width @ 20 dB GHz < 85 < 75 < 185
Peak Insertion Loss (without connector) dB < 4.0 < 4.0 < 4.0
Polarization Dependent Loss dB < 0.3 < 0.3 < 0.3
Chromatic Dispersion ps/nm ± 5 ± 5 ± 5
Wavelength Setting Error GHz < ± 4 < ± 4 < ± 5
Wavelength Repeatability GHz 1 1 1
Return Loss dB > 40
Maximum Input Optical Power mW 10
Tuning Speed (channel to channel) ms < 20
Tuning Voltage V < 70 < 70 < 70
Operating Temperature °C -5 to 65
Storage Temperature °C -40 to 85
Dimension (L x W x H)
(Optical Engine)
mm 68 × 44 × 11
Dimension (L x W x H)
(Full Functional Module)
mm 100 × 68 × 11


  1. Unless Otherwise indicated, all performances are specified in the operating conditions: optical power, wavelength and temperature ranges.
  2. NB: Narrow-Band. To be released soon.