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公开(公告)号：DE69217517D1
公开(公告)日：1997-03-27
申请号：DE69217517
申请日：1992-06-22
Applicant: IBM
Inventor： STILWELL GEORGE RAYMOND , SYLIVANT JAMES WILLIAM
IPC: H04B10/04 , H01S5/00 , H01S5/042 , H04B10/06 , H04B10/14 , H04B10/155 , H04B10/2581 , H04B10/12 , H01S3/096
Abstract: A laser source suitable for driving single mode and multimode fiber communication lines. The driver circuit includes a photo diode that, in multimode operation, responds to the laser light and causes the laser's output amplitude and wavelength to rapidly fluctuate thus producing the incoherent light required to drive multimode fiber. In single mode operation, the photo diode is disabled and the laser produces the requisite coherent light.
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公开(公告)号：DE3374237D1
公开(公告)日：1987-12-03
申请号：DE3374237
申请日：1983-12-06
Applicant: IBM
Inventor： HARBOUR EDWARD EARL , LYNCH ROBERT CARLTON , STILWELL GEORGE RAYMOND
IPC: H04B10/12 , H04B10/00 , H04B10/135 , H04B10/14 , H04B10/2581 , H04L29/10 , G06F13/40 , H04B9/00
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公开(公告)号：DE3066773D1
公开(公告)日：1984-04-05
申请号：DE3066773
申请日：1980-12-04
Applicant: IBM
Inventor： KOLODZEY JAMES STANLEY , NOEL FRANCIS EDWARD , STILWELL GEORGE RAYMOND
Abstract: The present circuit, which serves as a twin simplex/half-duplex interfacing, includes a triple input NAND gate (28), the output of which is connected directly to the outgoing simplex conductor (30). Signals on the incoming simplex conductor (34) are applied to the three inputs of NAND gate (28) through separate signals paths which introduce different delays. One signal path introduces an intermediate delay before applying the incoming signal to NAND gate (28) in an inverted form. The half-duplex line (16) is connected to this signal path. While incoming signals are applied at all three inputs to NAND gate (28) as well as to the half-duplex line (16), a lack of coincidence at the inputs prevents any incoming signal from passing through the circuit to the outgoing simplex line (30).
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Patent Agency Ranking
公开(公告)号：DE69222336D1
公开(公告)日：1997-10-30
申请号：DE69222336
申请日：1992-02-26
Applicant: IBM
IPC: H04L5/16
Abstract: An interface circuit for connecting an electrical half-duplex system to an optical simplex system includes logic which permits keep-alive signals to be gated onto the transmitting simplex fiber when data is not being received on the half-duplex conductor. The interface circuit includes receive logic connected in parallel with the receive data path. The receive logic responds to predetermined bit patterns in the received data to control the receive and transmit data path connections. The interface circuit also includes transmit logic connected in parallel with the transmit data path. The transmit logic responds to bit patterns in the data on the transmit data path to selectively gate the output of a keep-alive oscillator onto the transmit simplex fiber.
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公开(公告)号：DE3787271T2
公开(公告)日：1994-04-21
申请号：DE3787271
申请日：1987-12-08
Applicant: IBM
Inventor： STILWELL GEORGE RAYMOND
Abstract: A wavelength agile optical receiving device can be used in an optical equivalent of an "order wire" data communication system. The receiving device includes an acoustooptic grating (10) which can be tuned to deflect optical signals received at a particular wavelength by changing a drive signal produced by an acoustic transducer (12). A multiwavelength optical signal (14) is applied to the grating. Under "order wire" or quiescent conditions, light at an order wire wavelength is deflected onto a split optical detector (16) . A processor (32) is employed to select control signals for a voltage controlled oscillator (34) which drives the acoustic transducer (12) . The processor (32) can cause the transducer output to be changed to provide deflection of optical energy at a selectable wavelength onto the detector (16).
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公开(公告)号：DE69222336T2
公开(公告)日：1998-03-26
申请号：DE69222336
申请日：1992-02-26
Applicant: IBM
IPC: H04L5/16
Abstract: An interface circuit for connecting an electrical half-duplex system to an optical simplex system includes logic which permits keep-alive signals to be gated onto the transmitting simplex fiber when data is not being received on the half-duplex conductor. The interface circuit includes receive logic connected in parallel with the receive data path. The receive logic responds to predetermined bit patterns in the received data to control the receive and transmit data path connections. The interface circuit also includes transmit logic connected in parallel with the transmit data path. The transmit logic responds to bit patterns in the data on the transmit data path to selectively gate the output of a keep-alive oscillator onto the transmit simplex fiber.
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公开(公告)号：DE3787271D1
公开(公告)日：1993-10-07
申请号：DE3787271
申请日：1987-12-08
Applicant: IBM
Inventor： STILWELL GEORGE RAYMOND
Abstract: A wavelength agile optical receiving device can be used in an optical equivalent of an "order wire" data communication system. The receiving device includes an acoustooptic grating (10) which can be tuned to deflect optical signals received at a particular wavelength by changing a drive signal produced by an acoustic transducer (12). A multiwavelength optical signal (14) is applied to the grating. Under "order wire" or quiescent conditions, light at an order wire wavelength is deflected onto a split optical detector (16) . A processor (32) is employed to select control signals for a voltage controlled oscillator (34) which drives the acoustic transducer (12) . The processor (32) can cause the transducer output to be changed to provide deflection of optical energy at a selectable wavelength onto the detector (16).
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公开(公告)号：DE3665936D1
公开(公告)日：1989-11-02
申请号：DE3665936
申请日：1986-07-01
Applicant: IBM
Inventor： MUNN ROBERT DEVEREAUX , STILWELL GEORGE RAYMOND
Abstract: An optical fiber connector includes a ferrule (10) with an interior splice chamber (12). A fiber stub is installed in the ferrule in a factory operation with one end in the splice chamber (12). The ferrule also includes permanent, opposed electrodes (22, 24) with tips at the walls of the splice chamber (12). To attach the connector to an optical cable in a field operation, a predetermined length of insulation is stripped from the end of the cable (44) and the bare fiber is inserted into the splice chamber through a bore in the ferrule. Voltage is applied across the electrodes to create a plasma arc (30) in the splice chamber. The plasma arc (30) melts and fuses the adjacent ends of the cable fiber and fiber stub.
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