Integrated line-by-line optical pulse shaper for high-fidelity and rapidly reconfigurable RF-filtering.
We present a 32 channel indium phosphide integrated pulse shaper with 25 GHz channel spacing, where each channel is equipped with a semiconductor optical amplifier allowing for programmable line-by-line gain control with submicrosecond reconfigurability. We critically test the integrated pulse shaper by using it in comb-based RF-photonic filtering experiments where the precise gain control is leveraged to synthesize high-fidelity RF filters which we reconfigure on a microsecond time scale. Our on-chip pulse shaping demonstration is unmatched in its combination of speed, fidelity, and flexibility, and will likely open new avenues in the field of advanced broadband signal generation and processing.
Andrew J
AJ
Metcalf
Hyoung-Jun
HJ
Kim
Daniel E
DE
Leaird
Jose A
JA
Jaramillo-Villegas
Keith A
KA
McKinzie
Vikrant
V
Lal
Amir
A
Hosseini
Gloria E
GE
Hoefler
Fred
F
Kish
Andrew M
AM
Weiner