Optical phase-modulating devices and methods for their...

G - Physics – 02 – F

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G02F 1/025 (2006.01) G02F 1/015 (2006.01) G02F 1/21 (2006.01)

Patent

CA 2164134

A semiconductor-based optical phase-modulating device (200) has first (250, 260) and second (252, 260) pairs of phase-fixing electrodes bracketing a pair (254, 260) of phase-modulating electrodes. The phase-fixing electrodes fix electric fields across end regions of the phase-modulating device to reduce distributed resistance and capacitance of the phase-modulating device, thereby improving the frequency response of the phase-modulating device. The optical phase-modulating device is particularly applicable to use in integrated optic Mach-Zehnder interferometers used for optical signal modulation.

Un dispositif (200) modulateur de phase optique basé sur un semi-conducteur a une première (250, 260) et une seconde (252, 260) paires d'électrodes de fixation de phase prenant en sandwich une paire (254, 260) d'électrodes modulatrices de phase. Les électrodes de fixation de phase fixent les champs électriques traversant les régions terminales du dispositif modulateur de phase pour réduire la résistance et la capacité réparties du dispositif de modulation de phase, ce qui améliore la réponse en fréquence du dispositif de modulation de phase. Le dispositif optique de modulation de phase est particulièrement utile pour les interféromètres optiques intégrés du type Mach-Zehnder utilisés pour la modulation de signaux optiques.

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