公开(公告)号：US10545291B1

公开(公告)日：2020-01-28

申请号：US16115432

申请日：2018-08-28

Applicant: Cisco Technology, Inc.

Inventor： Sean P. Anderson ,  Dominic F. Siriani ,  Jock T. Bovington ,  Matthew J. Traverso ,  Vipulkumar Patel

IPC: G02B6/30 ,  G02B6/122 ,  G02B6/14 ,  G02B6/28 ,  G02B6/12

Abstract: The embodiments herein describe an optical transmitter that integrates a SCOWA into a photonic chip that includes a modulator. The embodiments herein place the SCOWA between the laser and the modulator. To accommodate the large mode size of the waveguide in the SCOWA, the photonic chip includes a pair of spot size converters coupled to the input and output of the SCOWA. Rather than amplifying a modulated signal as is typical with an inline amplifier, the SCOWA amplifies a continuous wave (CW) optical signal generated by the laser which introduces less noise and improves the OSNR of the transmitter.

公开(公告)号：US10095056B1

公开(公告)日：2018-10-09

申请号：US15498274

申请日：2017-04-26

Applicant: Cisco Technology, Inc.

Inventor： Sean P. Anderson ,  Donald Adams

IPC: G02F1/01

CPC classification number: G02F1/0147 ,  G02F1/011 ,  G02F1/2257 ,  G02F2201/066 ,  G02F2201/12 ,  G02F2202/10

Abstract: Embodiments include a method and associated apparatuses for phase-shifting an optical signal. The method comprises receiving, at a first end of an optical waveguide formed in a semiconductor layer and extending along a first axis, an optical signal having a first phase. The method further comprises transmitting, at a second end of the optical waveguide opposite the first end, a modified optical signal having a second phase different than the first phase. Transmitting a modified optical signal comprises applying a voltage signal between a first contact region and a second contact region formed in the semiconductor layer apart from the first axis. Applying a voltage signal causes an electrical current to be conducted along a dimension of the optical waveguide. The electrical current causes resistive heating of the optical waveguide and a desired phase shift between the first phase and the second phase.

公开(公告)号：US09329344B2

公开(公告)日：2016-05-03

申请号：US14496489

申请日：2014-09-25

Applicant: Cisco Technology, Inc.

Inventor： Sean P. Anderson ,  Mark A. Webster

IPC: G02B6/14 ,  G02B6/27 ,  G02B6/126

CPC classification number: G02B6/27 ,  G02B6/126 ,  G02B6/2706 ,  G02B6/2766 ,  G02B6/2773

Abstract: An optical waveguide structure includes a rotator having a dual-layer core. A first layer of the dual-layer core may include a tapering portion. A second layer of the dual-layer core may include a rib portion disposed on the tapering portion. The combination of the rib portion and the tapering portion may receive a pair of optical signals, one being polarized in a TE mode and the other being polarized in a TM mode, and convert them to a pair of TE mode optical signals.

Abstract translation: 光波导结构包括具有双层芯的旋转器。 双层芯的第一层可以包括锥形部分。 双层芯的第二层可以包括设置在锥形部分上的肋部分。 肋部分和锥形部分的组合可以接收一对光信号，一个在TE模式下极化，另一个在TM模式下极化，并将它们转换成一对TE模式光信号。

公开(公告)号：US20150023630A1

公开(公告)日：2015-01-22

申请号：US14496489

申请日：2014-09-25

Applicant: Cisco Technology, Inc.

Inventor： Sean P. Anderson ,  Mark A. Webster

IPC: G02B6/27

CPC classification number: G02B6/27 ,  G02B6/126 ,  G02B6/2706 ,  G02B6/2766 ,  G02B6/2773

Abstract: An optical waveguide structure includes a rotator having a dual-layer core. A first layer of the dual-layer core may include a tapering portion. A second layer of the dual-layer core may include a rib portion disposed on the tapering portion. The combination of the rib portion and the tapering portion may receive a pair of optical signals, one being polarized in a TE mode and the other being polarized in a TM mode, and convert them to a pair of TE mode optical signals.

Abstract translation: 光波导结构包括具有双层芯的旋转器。 双层芯的第一层可以包括锥形部分。 双层芯的第二层可以包括设置在锥形部分上的肋部分。 肋部分和锥形部分的组合可以接收一对光信号，一个在TE模式下极化，另一个在TM模式下极化，并将它们转换成一对TE模式光信号。