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Tunable Dispersion Compensation Module (TDCM)
GROWSFIBER's tunable dispersion compensation module (TDCM) is based on Gires-Tournois etalon technology. It makes different wavelengths of optical signals transmit different optical paths and produces periodic dispersion effects. By controlling the temperature of the etalon interference cavity, the dispersion tuning can be achieved. This product has the characteristics of high compensation accuracy, adjustable dispersion compensation value, low loss, and small size. It is suitable for high-speed DWDM systems or occasions where dynamic dispersion adjustment is required.
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  • High dispersion compensation accuracy
  • Wide dispersion adjustment range
  • Adjustable positive and negative dispersion
  • Low insertion loss (IL)
  • Low polarization mode dispersion (PMD)
  • Low polarization dependent loss (PDL)
  • Using plug-in board package for easy integration
  • Long-distance optical transmission network
  • DWDM optical transmission network
Parameters Specification
Operating Wavelength Range 1528nm to 1568nm
Operating Bandwidth ITU±18GHz
Channel Spacing 100GHz
Wavelength Shift Capability 50GHz (starting wavelength 196THz)
Dispersion Adjustable Range ±1400ps/nm
Dispersion Adjustable Range @50~55GHz Operating Bandwidth ±400ps/nm
Dispersion Adjustable Range @36~45GHz Operating Bandwidth ±800ps/nm
Dispersion Adjustable Range @20~26GHz Operating Bandwidth ±1400ps/nm
Dispersion Setting Resolution ≤ 10ps/nm
Dispersion Compensation Accuracy @±400ps/nm Adjustable Range ±10ps/nm
Dispersion Compensation Accuracy @±400ps/nm Adjustable Range ±30ps/nm
Dispersion Compensation Accuracy @±1400ps/nm Adjustable Range ±60ps/nm
Tuning Stability ±5ps/nm
Insertion Loss (IL) 3dB to 6dB
Insertion Loss Ripple ≤ 1dB
Insertion Loss Uniformity ≤ 1dB
Return Loss (RL) ≥ 40dB (typical 50dB)
Tuning Time ≤ 25s
Polarization Dependent Loss (PDL) ≤ 0.2dB
Polarization Mode Dispersion (PMD) ≤ 1ps
Operating Temperature Range -5℃ to +65℃
Power Consumption ≤ 8W
Service Life More than 20 years

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