公开(公告)号：US20180031870A1

公开(公告)日：2018-02-01

申请号：US15549745

申请日：2016-02-17

Applicant: Oclaro Technology Limited

Inventor： Robert Griffin ,  Brian L. Heffner

IPC: G02F1/01 ,  H04B10/50 ,  G02F1/225

CPC classification number: G02F1/0123 ,  G02F1/225 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2001/217 ,  G02F2201/58 ,  G02F2203/20 ,  H04B10/50575

Abstract: A Mach-Zehnder modulator for modulating optical signals, and comprising: a plurality of modulating waveguide sections; at least one bias electrode in electrical communication with at least one modulating waveguide section and configured to apply at least one electrical bias signal to one or more of the modulating waveguide sections; and an output optical combiner comprising a plurality of inputs and a plurality of outputs, wherein the plurality of inputs of the combiner are in optical communication with output sides of the plurality of modulating waveguide sections, and wherein a plurality of the outputs of the combiner are monitor outputs.

公开(公告)号：US10191306B2

公开(公告)日：2019-01-29

申请号：US15549745

申请日：2016-02-17

Applicant: Oclaro Technology Limited

Inventor： Robert Griffin ,  Brian L. Heffner

IPC: G02F1/035 ,  G02F1/01 ,  G02F1/225 ,  H04B10/50 ,  G02F1/21

Abstract: A Mach-Zehnder modulator for modulating optical signals, and comprising: a plurality of modulating waveguide sections; at least one bias electrode in electrical communication with at least one modulating waveguide section and configured to apply at least one electrical bias signal to one or more of the modulating waveguide sections; and an output optical combiner comprising a plurality of inputs and a plurality of outputs, wherein the plurality of inputs of the combiner are in optical communication with output sides of the plurality of modulating waveguide sections, and wherein a plurality of the outputs of the combiner are monitor outputs.

公开(公告)号：US20180183526A1

公开(公告)日：2018-06-28

申请号：US15735715

申请日：2016-06-10

Applicant: Oclaro Technology Limited

Inventor： Robert Griffin

IPC: H04B10/50 ,  H04B10/588 ,  H04B10/564 ,  H04B10/079 ,  G02F1/21

CPC classification number: H04B10/50572 ,  G02F1/21 ,  G02F1/225 ,  G02F2001/212 ,  H04B10/07955 ,  H04B10/5057 ,  H04B10/50575 ,  H04B10/564 ,  H04B10/588 ,  H04B2210/254

Abstract: An optical communications apparatus comprising a host (100) and an optical module (200) comprising a Mach-Zehnder modulator (202), MZM, wherein the optical module is removably connected to the host via a connection path, the optical communications apparatus comprising: a signal generator (101) at the host, configured to generate a plurality of calibration signals at a plurality of frequencies; a host interface (102) configured to transmit the calibration signals to the optical module via the connection path; a module interface (201) configured to receive the transmitted calibration signals; wherein the MZM is configured to use the calibration signals to modulate a laser light source (206) and biased to a point at which average output power is proportional to the output modulated signal; an optical detector configured to measure an average magnitude of an output of the MZM when each of the calibration signals is used to modulate the laser light source; one of a host calibration unit (103) and a module calibration unit (203), configured to determine a magnitude response of the connection path based on the measured average magnitudes and magnitudes of the respective calibration signals, and further configured to determine a pre-emphasis characteristic based on the magnitude response, the pre-emphasis characteristic for application to signals transmitted by the optical transmitter in use.

公开(公告)号：US10128956B2

公开(公告)日：2018-11-13

申请号：US15735715

申请日：2016-06-10

Applicant: Oclaro Technology Limited

Inventor： Robert Griffin

IPC: H04B10/50 ,  H04B10/588 ,  G02F1/21 ,  H04B10/079 ,  H04B10/564 ,  G02F1/225

Abstract: An optical communications apparatus comprising a host (100) and an optical module (200) comprising a Mach-Zehnder modulator (202), MZM, wherein the optical module is removably connected to the host via a connection path, the optical communications apparatus comprising: a signal generator (101) at the host, configured to generate a plurality of calibration signals at a plurality of frequencies; a host interface (102) configured to transmit the calibration signals to the optical module via the connection path; a module interface (201) configured to receive the transmitted calibration signals; wherein the MZM is configured to use the calibration signals to modulate a laser light source (206) and biased to a point at which average output power is proportional to the output modulated signal; an optical detector configured to measure an average magnitude of an output of the MZM when each of the calibration signals is used to modulate the laser light source; one of a host calibration unit (103) and a module calibration unit (203), configured to determine a magnitude response of the connection path based on the measured average magnitudes and magnitudes of the respective calibration signals, and further configured to determine a pre-emphasis characteristic based on the magnitude response, the pre-emphasis characteristic for application to signals transmitted by the optical transmitter in use.

公开(公告)号：US10110314B2

公开(公告)日：2018-10-23

申请号：US15577286

申请日：2016-05-27

Applicant: Oclaro Technology Limited

Inventor： Robert Griffin

IPC: H04B10/00 ,  H04B10/12 ,  H04B10/516 ,  H04B10/2507 ,  H04B10/58 ,  H04B10/69 ,  G02B6/293 ,  H04Q11/00 ,  H04B10/077 ,  H04B10/572 ,  H04J14/02 ,  H04J14/06 ,  H04L1/00 ,  H04B10/073 ,  H04B10/294 ,  H04B10/556

Abstract: There is described a transmitter device for transmitting an optical signal in the form of a plurality of subcarrier channels having different wavelengths. The device comprises first and second optical carrier emitters for emitting light in first and second subcarriers at first and second frequencies or polarizations respectively. First and second modulators are provided for modulating the first and second subcarriers with first and second modulation signals. An interleaver is provided for interleaving the first and second modulated subcarriers into the optical signal. First and second digital signal processing units are configured to pre-emphasize the first and second modulation signals to compensate for a wavelength-dependent power transfer function of the interleaver.

公开(公告)号：US20180159630A1

公开(公告)日：2018-06-07

申请号：US15577286

申请日：2016-05-27

Applicant: Oclaro Technology Limited

Inventor： Robert Griffin

IPC: H04B10/516 ,  H04B10/69 ,  H04B10/572 ,  H04L1/00 ,  H04J14/02 ,  H04J14/06 ,  G02B6/293

CPC classification number: H04B10/516 ,  G02B6/29352 ,  G02B6/29386 ,  H04B10/0731 ,  H04B10/077 ,  H04B10/2507 ,  H04B10/2941 ,  H04B10/506 ,  H04B10/556 ,  H04B10/572 ,  H04B10/58 ,  H04B10/69 ,  H04B10/697 ,  H04J14/0208 ,  H04J14/06 ,  H04L1/0071 ,  H04Q11/0001

Abstract: There is described a transmitter device for transmitting an optical signal in the form of a plurality of subcarrier channels having different wavelengths. The device comprises first and second optical carrier emitters for emitting light in first and second subcarriers at first and second frequencies or polarisations respectively. First and second modulators are provided for modulating the first and second subcarriers with first and second modulation signals. An interleaver is provided for interleaving the first and second modulated subcarriers into the optical signal. First and second digital signal processing units are configured to pre-emphasise the first and second modulation signals to compensate for a wavelength-dependent power transfer function of the interleaver.