OPTICAL TRANSMITTER

PURPOSE:To attain stable signal transmission, by sampling a transmitting signal with a high speed pulse, and driving and modulating a laser with the signal, in an optical signal transmitter. CONSTITUTION:An interface code is converted into a binary pulse signal at a code conversion section 1, sample...

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Bibliographische Detailangaben
1. Verfasser:	TEJIMA KUNIO
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 ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FREQUENCY-CHANGING NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	PURPOSE:To attain stable signal transmission, by sampling a transmitting signal with a high speed pulse, and driving and modulating a laser with the signal, in an optical signal transmitter. CONSTITUTION:An interface code is converted into a binary pulse signal at a code conversion section 1, sampled at a sampling circuit 15 with an output of a high frequency pulse generator 14, and controls a current of a laser diode 3 with a driving circuit 2 and an optical pulse is transmitted to an optical fiber transmission system 13. At a reception side, an optical signal is converted into an electric signal with a photodetector 6, amplified at an amplifying circuit 7, and an original signal is obtained through a waveform equalizer 8 having a low pass filter characteristic and a discriminating reproducing circuit 12 for the reception signal. In the Figure, circuits 4 and 5 at transmission side are stabilizing circuits for laser output light, circuits 9 and 10 at reception side are AGC circuits and a circuit 11 is a pickup circuit for a timing signal.