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Cost DFB Distributed Feedback Laser 800G

Cost DFB Distributed Feedback Laser 800G

HOME / Cost DFB Distributed Feedback Laser 800G

Cost DFB Distributed Feedback Laser 800G - BENNIE OPTICAL [PDF]

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DFB lasers for 800G optical systems typically cost between $500 and $2,500 per unit, depending on wavelength, output power, and packaging.

Overview

Distributed Feedback (DFB) lasers are single-frequency, narrow-linewidth laser diodes widely used in high-speed telecommunications, including 800G systems, due to their stable wavelength, low noise, and precise tunability . They are essential for dense wavelength division multiplexing (DWDM) and coherent optical transmission, where wavelength precision and mode stability are critical .

Factors Affecting Cost

  1. Wavelength and Tuning Range: DFB lasers for telecom typically operate in the C-band (1530–1565 nm) or L-band (1565–1625 nm). Lasers with tighter wavelength tolerances or broader tunability are more expensive .
  2. Output Power: Higher output power (e.g., 80–130 mW) increases cost due to more robust thermal management and packaging requirements .
  3. Package Type:
    • TO-can: Compact and lower cost, suitable for OEM integration .
    • Butterfly package: Includes thermoelectric cooling (TEC), photodiode monitoring, and optical isolators; higher cost but better stability .
    • Fiber-coupled or OEM packages: Custom integration can increase price significantly .
  4. Linewidth and Noise Performance: Narrower linewidths (down to a few kHz) and low relative intensity noise (RIN) increase manufacturing complexity and cost .
  5. Customization: Many DFB lasers are custom-made for specific wavelengths, power levels, or fiber coupling, which can raise the price by 20–50% or more .

Typical Price Range

  • Standard telecom DFB lasers: $500–$1,200 per unit for TO-can or basic fiber-coupled versions.
  • High-performance, butterfly-packaged DFB lasers: $1,500–$2,500 per unit, especially for coherent 800G systems requiring ultra-stable wavelength and low noise .
  • Custom or OEM-integrated units: Prices can exceed $3,000 depending on specifications and volume .

Conclusion

For 800G optical communication, selecting a DFB laser involves balancing cost, wavelength stability, output power, and packaging. While standard TO-can lasers are more affordable, high-end butterfly or fiber-coupled DFB lasers are preferred for coherent 800G transceivers due to their superior stability and low noise performance. For precise pricing, contacting suppliers like RPMC, Thorlabs, or nanoplus with your exact wavelength, power, and package requirements is recommended .

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