Electronically Tunable Wide Band Optical Delay Line Based on InGaAs Quantum Well Microresonators

Ultrafast tunable optical delay line based on indirect photonic transitions.

We introduce the concept of an indirect photonic transition and demonstrate its use in a dynamic delay line to alter the group velocity of an optical pulse. Operating on an ultrafast time scale, we show continuously tunable delays of up to 20 ps, using a slow light photonic crystal waveguide only 300 μm in length. Our approach is flexible, in that individual pulses in a pulse stream can be cont...

All-fiber tunable optical delay line.

We present a tunable optical delay line based on the use of a single chirped fiber Bragg grating written into a standard single mode optical fiber. In the proposed scheme, the delay is induced through the Bragg grating differential group delay curve. This is achieved by launching orthogonally polarized optical pulses in both directions into the Bragg grating and by controlling its local birefri...

Optical properties and band bending of InGaAs/GaAsBi/InGaAs type-II quantum well grown by gas source molecular beam epitaxy

Wide-bandwidth continuously tunable optical delay line using silicon microring resonators.

We demonstrate a distortion free tunable optical delay as long as 135 ps with a 10 GHz bandwidth using thermally tuned silicon microring resonators in the novel balanced configuration. The device is simple, easy to control and compact measuring only 30 µm wide by 250 µm long.

Tunable wideband optical delay line based on balanced coupled resonator structures.

An optical tunable delay line based on a side-coupled integrated spaced sequence of resonator (SCISSOR) structure in which pairs of resonances are tuned in opposite directions around the signal frequency is proposed and analyzed. It is shown that this balanced SCISSOR design mitigates the deleterious effects of group delay dispersion and provides both wide bandwidth and continuously tunable lon...