Optical modulator having Mach-Zender arrangement and method to generate modulated optical signal using the same
US8300992B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | May 27, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12142
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor optical modulator with the Mach-Zender type is disclosed. The optical modulator of the invention cab driven by a single phase signal and reduce the chirping of the modulated light. Two waveguides of the Mach-Zender modulator each including an active layer showing the exciton resonance in the refractive index are connected with a resistor. The driving signal is applied to one of the waveguides, while, the signal is applied to the other waveguide through the resistor where the other waveguide is grounded through a resistor. Adjusting the resistance of two resistors and the amplitude of the applied signal, the Mach-Zender modulator shows a substantial modulation degree with substantially no chirping characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.