公开(公告)号：US20250105593A1

公开(公告)日：2025-03-27

申请号：US18545962

申请日：2023-12-19

Applicant: Lumentum Operations LLC

Inventor： Richa DUBEY ,  Yu ZHANG

IPC: H01S5/183 ,  H01S5/062 ,  H01S5/20

Abstract: A vertical-cavity surface-emitting laser (VCSEL) may include a distributed Bragg reflector (DBR) stack. The DBR stack may include a mirror structure over a cavity region. The DBR stack may include an etch stop layer over the mirror structure. The DBR stack may include a grating layer over the etch stop layer. The grating layer may include a grating structure associated with polarization of output light emitted by the VCSEL.

公开(公告)号：US20170168241A1

公开(公告)日：2017-06-15

申请号：US15152270

申请日：2016-05-11

Applicant: Lumentum Operations LLC

Inventor： Barthelemy FONDEUR ,  Jinxi SHEN ,  Leonid FRENKEL ,  Yimin HUA ,  David R. WALKER ,  Yu ZHANG ,  Vlatko MILINKOVIC

IPC: G02B6/293 ,  H04B10/25 ,  H04Q11/00

CPC classification number: G02B6/29353 ,  G02B6/29355 ,  G02B6/29395 ,  G02F1/0147 ,  G02F1/21 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2203/055 ,  H04B10/2504 ,  H04J14/02 ,  H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0018

Abstract: A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The cascade of MZ interferometers, each having a free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. Another MZ interferometer in series with the cascade of interferometers including an asymmetric or variable coupler, is tuned to have low transmission at the center frequency of the selected optical channel.

公开(公告)号：US20160062208A1

公开(公告)日：2016-03-03

申请号：US14939123

申请日：2015-11-12

Applicant: Lumentum Operations LLC

Inventor： Barthelemy FONDEUR ,  Jinxi SHEN ,  Leonid FRENKEL ,  Yimin HUA ,  David R. WALKER ,  Yu ZHANG ,  Vlatko MILINKOVIC

IPC: G02F1/225 ,  G02B6/293 ,  G02F1/01

CPC classification number: G02B6/29353 ,  G02B6/29355 ,  G02B6/29395 ,  G02F1/0147 ,  G02F1/21 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/16 ,  G02F2203/055 ,  H04B10/2504 ,  H04J14/02 ,  H04Q11/0005 ,  H04Q2011/0009 ,  H04Q2011/0018

Abstract: A tunable PLC optical filter having sequentially connected thermally tunable Mach-Zehnder (MZ) interferometers is described. The cascade of MZ interferometers, each having a free spectral ranges matching ITU frequency grid spacing, are tuned so as to have a common passband centered on the frequency of the signal being selected, while having at least one of the stopbands centered on any other ITU frequency. Any other optical channel that may be present at any other ITU frequency is suppressed as a result. Another MZ interferometer in series with the cascade of interferometers including an asymmetric or variable coupler, is tuned to have low transmission at the center frequency of the selected optical channel.

Abstract translation: 描述了具有顺序连接的可热调谐的马赫 - 曾德（MZ）干涉仪的可调谐PLC光学滤波器。 每个具有与ITU频率格栅间隔匹配的自由频谱范围的MZ干涉仪的级联被调谐，以便具有以所选信号的频率为中心的公共通带，同时具有以任何其它ITU为中心的至少一个阻带 频率。 因此可能会抑制任何其他ITU频率出现的任何其他光信道。 与包括不对称或可变耦合器的干涉仪级联串联的另一MZ干涉仪被调谐为在所选择的光通道的中心频率处具有低传输。