| Author(s): |
Tasshi Dennis; Paul D. Hale; |
| Title: |
High-Accuracy Photoreceiver Frequency Response Measurements at 1.55 um by Use of a Heterodyne Phase-Locked Loop |
| Published: |
September 29, 2011 |
| Abstract: |
We demonstrate a high-accuracy heterodyne measurement system for characterizing the magnitude of the frequency response of high-speed 1.55 µm photoreceivers from 2 MHz to greater than 50 GHz. At measurement frequencies below 2 GHz, we employ a phase-locked loop with a double-heterodyne detection scheme, which enables precise tuning of the heterodyne beat frequency with an RF synthesizer. At frequencies above 2 GHz the system is operated in free-run mode with thermal laser tuning of the beat frequency. We estimate the measurement uncertainties for the low frequency range and compare the measured high-frequency response of a photoreceiver to a measurement using electro-optic sampling. |
| Citation: |
Optics Express |
| Volume: |
19 |
| Issue: |
21 |
| Pages: |
pp. 20103 - 20114 |
| Keywords: |
Calibration; Frequency Response; Heterodyne; Metrology; Optical Communications; Phase Locked Loop; Photoreceiver |
| Research Areas: |
Electronics & Telecommunications, Telecommunications, Optoelectronics |
