| Patent Number |
Title Of Patent |
Date Issued |
| 5870418 |
Driving circuit of laser diode and optical transmission device |
February 9, 1999 |
| An optical transmission device which is used for a short range optical data link or an optical communication system for subscribers and more particularly requires no automatic optical power control minimizes the turn-on delay time of a laser diode and allows unformatted optical signal |
| 5715339 |
Optical parallel transmission device |
February 3, 1998 |
| A parallel optical transmission device is disclosed, which comprises a transmitter section having one or a plurality of transmitter modules converting one or a plurality of input electric signals into optical signals; a section consisting of bundles of optical waveguides 20i, j trans |
| 5675599 |
Driving circuit of laser diode and optical transmission device |
October 7, 1997 |
| An optical transmission device which is used for a short range optical data link or an optical communication system for subscribers and more particularly requires no automatic optical power control minimizes the turn-on delay time of a laser diode and allows unformatted optical signal |
| 5568576 |
Optical parallel transmission device |
October 22, 1996 |
| A parallel optical transmission device is disclosed, which comprises a transmitter section having one or a plurality of transmitter modules converting one or a plurality of input electric signals into optical signals; a section consisting of bundles of optical waveguides 20i, j trans |
| 5448661 |
Optical parallel transmission device |
September 5, 1995 |
| A parallel optical transmission device is disclosed, which comprises a transmitter section having one or a plurality of transmitter modules converting one or a plurality of input electric signals into optical signals; a section consisting of bundles of optical waveguides 20i, j trans |
| 5263109 |
Optical transmission paths and methods of measuring their optical transmission times |
November 16, 1993 |
| An optical transmission time measuring device for an optical transmission path includes an optical bidirectional coupler having at least two input ports and at least two output ports. A pulse light source is connected to one of the input ports of the coupler and photodetector is connecte |
