Year: 2013
Type: article
Abstract: Optical single‐sideband (SSB) modulation is theoretically realised by applying two modulation signals with a 90° phase difference to the dual‐electrode type electro‐optic (EO) modulator. A branch‐line coupler (BC) as the microwave 90° hybrid was directly prepared on the EO modulator substrate, LiNbO 3 , to create two modulation signals from a single input signal. Output ports of the BC were connected to the modulation electrodes on the substrate. Thereby, an EO optical SSB modulator was realised with a single‐tip and a small‐sized configuration. The SSB modulator was designed and fabricated for around 10 GHz modulation frequency and 1550 nm light wavelength. The optical SSB modulation operation with a sideband suppression ratio of more than 20 dB was confirmed by the experiment.
Source: Electronics Letters
DOI: 10.1049/el.2013.1533
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2046586554