Application Note: Simple frequency comb offset detection from 0 to 80 degrees C
We utilize a new fiber-to-chip attachment technique to enable the Octave Photonics Comb-Offset-Stabilization Module (COSMO) to detect the carrier-envelope-offset frequency (fCEO) of a Vescent Photonics 100 MHz, 1550 nm oscillator over a range from below 0 to over 80 degrees C. This miniaturized and ruggedized COSMO exhibits minimal size, weight, and power consumption, demonstrates the ability to detect the fCEO of laser frequency combs in harsh environments.
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Figure 1. (left) The COSMO-mini condenses water at -2 degrees C during the temperature test. (right) The signal-to-noise ratio (SNR) of the carrier-envelope offset frequency (fCEO) remains near 45 as the temperature is ramped from -2 degrees C to 82 degrees C.