Optischer Sender und optische Sendereinheit

Details

Veröffentlichungs-Nr.

EP2461498

Aktenzeichen

EP11186671

Anmeldetag

26. Oktober 2011

Veröffentlichung

27. September 2017

Erteilung

27. September 2017

Rechtsraum

EP

IPC

H04B10/50H04B10/572

Abstract

The optical transmitter (1) includes a light source (11); a signal processor (12); an optical modulator (15) that modulates output light from the light source (1) in accordance with a transmitting signal subjected to digital signal processing in the signal processor (12) and outputs the modulated light as a light signal to a transmission path; and a control circuit (16) that controls a carrier-wave frequency of the light signal output from the optical modulator (15), the signal processor (12) including a mapping circuit (121) that maps the transmitting signal to electric-field information according to a modulating scheme, and a phase rotating circuit (122) that provides a phase rotation having a constant cycle to an electric-field phase of the electric-field information to which the mapping circuit (121) maps the transmitting signal, the control circuit (16) controlling the cycle of the phase rotation that the phase rotating circuit (122) provides and thereby controlling the carrier-wave frequency of the light signal output from the optical modulator (15).

Anmelder

Firma

Fujitsu Limited

Land

🇯🇵 Japan

Fachgebiete