公开(公告)号：JP2001189514A

公开(公告)日：2001-07-10

申请号：JP2000330494

申请日：2000-10-30

Applicant: LUCENT TECHNOLOGIES INC

Inventor： STAYT JOHN W JR

IPC: H01S5/00 ,  H01S5/06 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/40 ,  H04B10/08

Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for further improving the quality and lifetime of these devices by reproducing the failure of a wavelength stabilized laser module. SOLUTION: A system and method are provided for updating and storing values of operating conditions for the wavelength stabilized laser module for use in failure mode analysis. The system and method utilize the embedded microprocessor 102 already on the laser module with added firmware 106 and the storage device 104. A method for acquiring and storing these data values for use after a failed laser module is returned to the manufacturer is provided.

公开(公告)号：JP2001044558A

公开(公告)日：2001-02-16

申请号：JP2000212091

申请日：2000-07-13

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BROUTIN SCOTT L ,  PLOURDE JAMES K ,  STAYT JOHN W JR

IPC: H01S5/00 ,  H01S5/024 ,  H01S5/06 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/0687

Abstract: PROBLEM TO BE SOLVED: To stabilize and lock absolute wavelength of laser beams by a method, wherein a temperature change of an etalon optical filter is compensated actively. SOLUTION: A temperature of an etalon filter 30 is monitored by a thermistor 32, and a controller 40 monitors the etalon 30 and a laser chip 12 by use of an etalon path signal, reference path signal and a temperature measured by the thermistor 32. Thus, a temperature of the etalon is monitored, and a value of grid-offset is adjusted, based on a temperature change of the etalon. Here, the laser system 10 uses a value obtained in the grid-offset in calculation of a difference for use in controlling a TEC 52, and can compensate effectively a change of etalon reaction generated from the temperature change of the etalon. By compensating for the temperature change of the etalon, the laser system 10 can lock effectively to the absolute wavelength of a laser beam.

公开(公告)号：JP2001196688A

公开(公告)日：2001-07-19

申请号：JP2000396401

申请日：2000-12-27

Applicant: LUCENT TECHNOLOGIES INC

Inventor： ACKERMAN DAVID ALAN ,  BROUTIN SCOTT L ,  PLOURDE JAMES KEVIN ,  STAYT JOHN W JR

IPC: H01S5/0687 ,  H01S5/06 ,  H01S5/0625

Abstract: PROBLEM TO BE SOLVED: To provide a method and, a device for selecting an optimum operation state in a digital wavelength stabilization control system. SOLUTION: In this method, the value of a tuning current supplied to a multi-channel laser source is controlled. For each operation laser channel, the desired inclination of the laser source is stored as the function of the tuning current. Then, the inclination of the laser source is measured as the function of the tuning current. After that, the tuning current is adjusted until an inclination being essentially close to the desired one is measured. An operation tuning current to the laser source is set to a value corresponding to the measured inclination.

公开(公告)号：JP2001100855A

公开(公告)日：2001-04-13

申请号：JP2000226249

申请日：2000-07-27

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BROUTIN SCOTT L ,  DAUTARTAS MINDAUGAS FERNAND ,  STAYT JOHN W JR

IPC: G06Q50/00 ,  G06F1/00 ,  G06F11/34 ,  G06F21/10 ,  G06F17/60

Abstract: PROBLEM TO BE SOLVED: To enable a user to restart a program, without penalty of lost time by surely performing exact tracking of execution time and by periodically updating execution time even when a program crush occurs. SOLUTION: Concerning the method for monitoring the use of the execution time of demonstration evaluation software, the number of clocks is monitored while running a software program and through the whole execution, the lapse of execution time is updated periodically. The lapse of execution time is stored inside a key in a concealed file or in software registry. Until the lapse of execution time exceeds a prescribed evaluation time, the program is continuously operated, and then running is disabled until the program is registered by the user.