METHOD FOR CONTROLLING CHIRP OF OPTICAL MODULATION ELEMENT

METHOD FOR CONTROLLING CHIRP OF OPTICAL MODULATION ELEMENT

PROBLEM TO BE SOLVED: To provide a method capable of applying chirps having respectively different polarity without impressing large DC bias voltage. SOLUTION: The array direction of a 1st grounding electrode 5, a signal electrode 4 and a 2nd grounding electrode 6 having 1st and 2nd parts 6-1 and 6-...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SAKAI TAKESHI, SUGAMATA TORU, HASHIMOTO YOSHIHIRO, NAGATA HIROTOSHI
Format: Patent
Sprache:eng
Schlagworte:
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method capable of applying chirps having respectively different polarity without impressing large DC bias voltage. SOLUTION: The array direction of a 1st grounding electrode 5, a signal electrode 4 and a 2nd grounding electrode 6 having 1st and 2nd parts 6-1 and 6-2 divided in the longitudinal direction of an optical waveguide is set in parallel with the main surface 1A of a substrate 1 and reverse against the crystal axis direction of the substrate 1. The 1st grounding electrode 5, the signal electrode 4 and the 2nd grounding electrode 6 constitute modulating electrodes horizontally symmetrical about a center II between 1st and 2nd branched optical waveguides 2 and 3.