Transmission
Network Expertise.
Independent optical transport expertise, carrier-grade planning tools, and transmission network insights — built from real-world deployment, operations, and network architecture experience.
Professional-Grade Tools
All calculators run entirely in your browser. No login required.
DWDM Link Budget Planner
Hop-by-hop topology builder with cascaded OSNR, non-linear fiber penalties, and EDFA noise modeling. Supports 400G/800G coherent channels.
Open CalculatorOSNR Calculator
Standalone OSNR budget with amplifier chain analysis and system penalty breakdown per ITU-T G.975.
Fiber Loss Calculator
Span loss budget with connector, splice, and attenuation coefficient modeling per ITU-T G.652/G.654/G.655.
dBm / Power Converter
Convert between dBm, dBW, watts, and milliwatts. Includes an optical power budget reference table.
ITU-T Grid Calculator
C-Band and L-Band wavelength/frequency lookup with 50 GHz and 100 GHz ITU grid spacing.
Optical Transport Expertise
PhotonGrid is maintained by an optical transport professional with experience spanning network architecture, large-scale deployment, and carrier operations management across DWDM environments. Every tool reflects methodology applied in real carrier network decision-making.
Optical Transport Advisory
From network architecture review to vendor evaluation and capacity planning — independent optical transport expertise for transmission network programs.