Pluggable optical module and optical communication system

Patent metadata

Field	Value
Publication number	US-2020177283-A1
Application number	US-202016742370-A
Country	US
Kind code	A1
Filing date	Jan 14, 2020
Priority date	Sep 30, 2015
Publication date	Jun 4, 2020
Grant date	—

Abstract

An object is to output an optical signal accurately corresponding to a data signal. A pluggable optical module (100) includes a pluggable electric connector (11), a control unit (12), an optical signal output unit (13), and a pluggable optical receptor (14). The pluggable electric connector (11) can communicate a modulation signal (MOD) and a control signal (CON1) with an optical communication apparatus (92). The optical signal output unit (13) outputs an optical signal (LS) modulated by the modulation scheme by the control signal (CON1) in response to the modulation signal (MOD). The pluggable optical receptor (14) is configured in such a manner that an optical fiber (91) is insertable into and removable from the pluggable optical receptor (14). The pluggable optical receptor (14) can output the optical signal (LS) output from the optical signal output unit (13). The control unit (12) controls the optical signal output unit (13) to output the optical signal (LS) of a modulation amplitude set corresponding to the modulation signal (MOD) in the modulation scheme specified by the control signal (CON1).

First claim

1 - 12 . (canceled)

13 . A pluggable optical module comprising:
a pluggable optical connector configured to connect with a host communication apparatus; a first pluggable optical receptor configured to connect with a first optical fiber; a modulator configured to output a first optical signal modulated based on a modulation signal from the host communication apparatus; and a controller configured to control a driving voltage of the modulator based on both control information indicating a modulation scheme from the host communication apparatus and a peak voltage of the modulation signal.

14 . The pluggable optical module according to claim 13 , further comprising a light source configured to output a light, wherein
the modulator is further configured to comprise a Mach-Zehnder type optical modulator in which a phase modulation area is disposed on an optical waveguide, and the Mach-Zehnder type optical modulator modulates the light and output the first optical signal.

15 . The pluggable optical module according to claim 14 , wherein the controller is further configured to control amplitude of the modulation signal or a bias voltage applied to the phase modulation area.

16 . The pluggable optical module according to claim 14 , wherein
the controller is further configured to: store a target value of a voltage of the modulation signal for each modulation scheme indicated by the control information; identify the target value based on the peak voltage and the control information; and control the modulator based on the identified target value.

17 . The pluggable optical module according to claim 13 , further comprising:
a second pluggable optical receptor configured to connect with a second optical fiber; and an optical receiver configured to receive a second optical signal via the second pluggable optical receptor, and convert the received second optical signal into a data signal, wherein the controller is further configured to control the optical receiver based on the control information.

18 . The pluggable optical module according to claim 17 , wherein the controller is further configured to:
store a target value of amplitude of the data signal for each modulation scheme indicated by the control information; identify the target value based on the control information; and control the optical receiver based on the identified target value.

19 . An optical communication system comprising:
a first optical fiber configured to transmit an optical signal; a pluggable optical module configured in such a manner that the first optical fiber is insertable into and removable from the pluggable optical module, and to output the optical signal to the first optical fiber; and a host communication apparatus configured in such a manner that the pluggable optical module is insertable into and removable from the host communication apparatus, wherein the pluggable optical module comprises: a pluggable optical connector configured to connect with the host communication apparatus; a first pluggable optical receptor configured to connect with a first optical fiber; a modulator configured to output a first optical signal modulated based on a modulation signal from the host communication apparatus; and a controller configured to control a driving voltage of the modulator based on both control information indicating a modulation scheme from the host communication apparatus and a peak voltage of the modulation signal.

20 . The optical communication system according to claim 19 , further comprising a light source configured to output a light, wherein
the modulator is further configured to comprise a Mach-Zehnder type optical modulator in which a phase modulation area is disposed on an optical waveguide, and the Mach-Zehnder type optical modulator modulates the light and output the first optical signal.

21 . The optical communication system according to claim 20 , wherein the controller is further configured to control amplitude of the modulation signal or a bias voltage applied to the phase modulation area.

22 . The optical communication system according to claim 20 , wherein
the controller is further configured to: store a target value of a voltage of the modulation signal for each modulation scheme indicated by the control information; identify the target value based on the peak voltage and the control information; and control the modulator based on the identified target value.

23 . The optical communication system according to claim 19 , further comprising:
a second pluggable optical receptor configured to connect with a second optical fiber; and an optical receiver configured to receive a second optical signal via the second pluggable optical receptor, and convert the received second optical signal into a data signal, wherein the controller is further configured to control the optical receiver based on the control information.

24 . The optical communication system according to claim 23 , wherein the controller is further configured to:
store a target value of amplitude of the data signal for each modulation scheme indicated by the control information; identify the target value based on the control information; and control the optical receiver based on the identified target value.

Assignees

• Nec Corp

Inventors

• Komatsu Hirokazu

Classifications

• H04B10/50595

  to control the modulator DC bias · CPC title

• H04B10/50593

  to control the modulating signal amplitude including amplitude distortion · CPC title

• G02B6/4284

  of optical modules with disconnectable electrical connectors (latching arms for electrical connectors H01R13/627) · CPC title

• H04B10/07955

  Monitoring or measuring power · CPC title

• G02B6/4292

  the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements · CPC title