Optical Frequency Comb

Technical Explanation

Generating clean carrier frequencies above 100 GHz using electronic frequency multipliers is plagued by thermal phase noise and low output power. Optical Frequency Combs produce a series of discrete, equidistant, phase-locked laser frequencies. By beating two comb lines together on an ultrafast uni-traveling-carrier photodiode (UTC-PD), transceivers generate pristine Sub-THz and THz waves with phase noise orders of magnitude lower than electronic oscillators.

Key Functions

• Generating ultra-pure terahertz carrier frequencies via optical heterodyne photomixing
• Phase noise orders of magnitude lower than electronic oscillator frequency multipliers
• Enabling high-order modulation (64-QAM, 256-QAM) at frequencies above 200 GHz
• Tunable carrier generation spanning 100 GHz to multiple terahertz in a single photonic chip
• Seamless optical-to-wireless interfacing directly converting fiber data to wireless THz