公开(公告)号：EP1031065A1

公开(公告)日：2000-08-30

申请号：EP98954575.1

申请日：1998-11-12

Applicant: Bookham Technology PLC

Inventor： PECHSTEDT, Ralf-Dieter ,  LU, Yicheng

IPC: G02F1/225

CPC classification number: G02F1/0121 ,  G02F1/2257 ,  G02F2201/126

Abstract: The optical system comprises two optical paths (P1, P2), and an arrangement for changing the length of the two paths including two phase modulators (M1. M2) one coupled to each of the paths. A driving system (Figure 3) applies power to the phase modulators to drive them in the same direction and to change the amount of power applied to the phase modulators in opposite directions so as to change the length of each optical path in a different direction. As a result, the relationship between the changes in the amount of power applied to the modulators and the resulting changes in the phase of light beams passing through the device becomes substantially linear.

公开(公告)号：EP3198336B1

公开(公告)日：2018-10-31

申请号：EP15777789.7

申请日：2015-09-23

Applicant: Finisar Corporation

Inventor： DENOYER, Gilles, P.

IPC: G02F1/225 ,  H04B10/556

CPC classification number: G02F1/2255 ,  G02B6/14 ,  G02F1/2257 ,  G02F2001/212 ,  G02F2201/126 ,  H04B10/556

Abstract: A differential TWE MZM includes a differential driver, first and second capacitors, and first and second terminations. The differential driver includes a first differential output and a second differential output that collectively form a differential pair. The first differential output is DC coupled to a cathode of a first arm optical phase shifter of a TWE MZM. The second differential output is DC coupled to a cathode of a second arm optical phase shifter of the TWE MZM. The first capacitor AC couples the second differential output to an anode of the first arm optical phase shifter. The second capacitor AC couples the first differential output to an anode of the second arm optical phase shifter. The first and second terminations are coupled to the cathode and the anode of, respectively, the first or second arm optical phase shifter.

公开(公告)号：EP2615489B1

公开(公告)日：2017-09-20

申请号：EP12150994.7

申请日：2012-01-12

Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Inventor： Velthaus, Karl-Otto

IPC: G02F1/225 ,  G02F1/25

CPC classification number: G02F1/225 ,  G02F1/0121 ,  G02F1/2255 ,  G02F1/2257 ,  G02F1/25 ,  G02F2001/212 ,  G02F2201/126

公开(公告)号：EP3079007A1

公开(公告)日：2016-10-12

申请号：EP16171962.0

申请日：2012-01-12

Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

Inventor： VELTHAUS, Karl-Otto

IPC: G02F1/225 ,  G02F1/25 ,  G02F1/21

CPC classification number: G02F1/2257 ,  G02F1/0121 ,  G02F1/225 ,  G02F1/2255 ,  G02F1/25 ,  G02F2001/212 ,  G02F2201/126

Abstract: The invention relates to An electro-optic Mach-Zehnder modulator arrangement, comprising a plurality of first waveguide electrodes (210) and a plurality of second waveguide electrodes (220) arranged on top of capacitive segments (1110, 1210) of the first and the second optical waveguide (11, 12); a plurality of driver units (410) for supplying a voltage (V) to the electrode arrangement (2), each one of the driver unit (410) comprising at least a first output port (4410) coupled to one of the first waveguide electrodes (210) and a second output port (4420) coupled to one of the second waveguide electrodes (220); a non-grounded conductive region (30) via which the capacitive segment (1110) of the first optical waveguide (11) is connected to the capacitive segment (1210) of the second optical waveguide (12); and a DC-source (6) connected to the first and/or the second waveguide electrodes (210, 220) and the conductive region (30) for supplying a bias voltage (V bias ) across the capacitive segments (1110, 1210) of the optical waveguides (11, 12). According to the invention, each one of the driver units (41) is configured to supply a first varying signal (S+) to the first waveguide electrode (21) via the first output port (441) and to supply a second varying signal (S-) to the second waveguide electrode (22) via the second output port (442), wherein each one of the driver units (410) is a differential driver unit assigned to one first waveguide electrode (210) and one second waveguide electrode (220), and wherein the DC-source (6) is connected to the conductive region (30) and ground.

Abstract translation: 本发明涉及一种电光马赫曾德尔调制器装置，其包括多个第一波导电极（210）和多个第二波导电极（220），其布置在第一和第二波导电极的电容段（1110,1210）的顶部， 第二光波导（11,12）; 用于向电极装置（2）提供电压（V）的多个驱动器单元（410），驱动器单元（410）中的每一个包括至少第一输出端口（4410），第一输出端口（4410）耦合到第一波导电极 （210）和耦合到所述第二波导电极（220）之一的第二输出端口（4420）; 非接地导电区域（30），所述第一光波导（11）的电容段（1110）经由所述非接地导电区域连接到所述第二光波导（12）的电容段（1210）。 以及连接到第一和/或第二波导电极（210,220）和导电区域（30）的DC源（6），用于提供横跨电容段（1110,1210）的电压段（1110,1210）的偏压（V bias） 光波导（11,12）。 根据本发明，驱动器单元（41）中的每一个被配置为经由第一输出端口（441）向第一波导电极（21）提供第一变化信号（S +），并且提供第二变化信号（S + - ）经由第二输出端口（442）耦合到第二波导电极（22），其中每个驱动器单元（410）是分配给一个第一波导电极（210）和一个第二波导电极（220）的差分驱动器单元 ），并且其中所述DC源（6）连接到所述导电区域（30）并接地。

公开(公告)号：EP2453295B1

公开(公告)日：2014-09-10

申请号：EP10796926.3

申请日：2010-07-09

Applicant: Nippon Telegraph And Telephone Corporation

Inventor： GOH, Takashi ,  DOI, Yoshiyuki ,  MINO, Shinji ,  TSUZUKI, Ken ,  YAMAZAKI, Hiroshi ,  YAMADA, Takashi

IPC: H04B10/556

CPC classification number: G02F1/0327 ,  G02B2006/12142 ,  G02B2006/12159 ,  G02F1/225 ,  G02F2201/126 ,  G02F2203/20 ,  G02F2203/21

公开(公告)号：EP2542928A2

公开(公告)日：2013-01-09

申请号：EP11733204.9

申请日：2011-01-05

Applicant: Alcatel Lucent

Inventor： GILL, Douglas, M ,  RASRAS, Mahmoud

IPC: G02B6/125 ,  G02B6/26

CPC classification number: G02F1/025 ,  G02F1/218 ,  G02F1/225 ,  G02F2001/212 ,  G02F2201/126 ,  G02F2201/16

Abstract: An apparatus includes an optical splitter, an optical intensity combiner, first and second Mach-Zehnder interferometers, and first and second drive electrodes. The first Mach-Zehnder interferometer connects a first optical output of the optical intensity splitter to a first optical input of the optical intensity combiner. The second Mach-Zehnder interferometer connects a second optical output of the optical intensity splitter to a second optical input of the optical intensity combiner. The first drive electrode is located between and connected to a pair of semiconductor junctions along first internal optical arms of the Mach-Zehnder interferometers. The second drive electrode is located between and connected to a pair of semiconductor junctions along second internal optical arms of the Mach-Zehnder interferometers.

Abstract translation: 一种装置包括光分路器，光强度组合器，第一和第二马赫 - 策德尔干涉仪以及第一和第二驱动电极。 第一马赫 - 策德尔干涉仪将光强度分离器的第一光输出连接到光强度组合器的第一光输入端。 第二马赫 - 策德尔干涉仪将光强度分离器的第二光输出连接到光强度组合器的第二光输入端。 第一驱动电极位于沿着Mach-Zehnder干涉仪的第一内部光学臂的一对半导体结之间并连接到它们之间。 第二驱动电极位于沿着Mach-Zehnder干涉仪的第二内部光学臂的一对半导体结之间并与之连接。

公开(公告)号：EP1709480A1

公开(公告)日：2006-10-11

申请号：EP05722413.1

申请日：2005-01-12

Applicant: Optimer Photonics, Inc.

Inventor： RIDGWAY, Richard, W.

IPC: G02F1/065 ,  G02F1/225

CPC classification number: G02F1/065 ,  G02F1/0121 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2201/126 ,  G02F2203/06

Abstract: Optical devices (10, 40) are provided for optical signal modulation of light propagating in a waveguide core surrounded by polymeric cladding regions which include chromophores, under the control of an electrical signal propagating along a traveling wave electrode structure. The microwave electrode structure comprises a coplanar stripline including a control signal electrode (75) interposed between a pair of ground plane electrodes (72, 74). Each of the microwave ground plane electrodes is connected to a positive or negative DC bios source (+Vblas, -Vbias) and is coupled from the microwave signal input (44) by means of DC blocking capacitors (76). The ground electrode portions (72’, 74’) isolated from the signal input and output can be used to align the chromophores by applying a bias voltage at a temperature near the glass transition temperature of the polymer. The present invention also contemplates provision of a coplanar stripline as described and claimed herein.

公开(公告)号：EP1535107B1

公开(公告)日：2006-05-10

申请号：EP03793835.4

申请日：2003-09-04

Applicant: VALTION TEKNILLINEN TUTKIMUSKESKUS

Inventor： AALTO, Timo ,  KAPULAINEN, Markku ,  HARJANNE, Mikko ,  RÖNÖ, Markku

IPC: G02F1/01 ,  G02F1/313 ,  G02F1/225

CPC classification number: G02F1/2257 ,  G02F1/0147 ,  G02F1/3133 ,  G02F2201/126

Abstract: A method for controlling an optoelectronic component that includes two waveguides (3 and 4). The refractive index of the first waveguide (3) is changed periodically with a first control signal (1), the amplitude of which is changed between a first amplitude level (I) and higher second amplitude level (II). The refractive index of the second waveguide (4) is changed periodically with a second control signal (2), the amplitude of which is changed between the aforementioned first amplitude level (I) and a lower third amplitude level (III). When the control signals are on their common first amplitude level (I), the refractive indices of the waveguides are equal and the phase difference between them is zero. When the first control signal is on the second amplitude level (II) and the second control signal on the third amplitude level (III), the refractive indices of the waveguides are unequal so that their mutual phase difference has a predetermined target value. For accelerating a phase-difference change both control signals are adjusted during both the rise and the fall time periods simultaneously so that their combined effect leads to a very fast phase difference change, which settles already before the refractive indices of the waveguides are settled.

公开(公告)号：EP0881526A2

公开(公告)日：1998-12-02

申请号：EP98109543.3

申请日：1998-05-26

Applicant: NEC CORPORATION

Inventor： Shimizu, Junichi

IPC: G02F1/225

CPC classification number: G02F1/2257 ,  G02F2201/126

Abstract: A semiconductor Mach-Zehnder modulator comprises a pair of phase modulator arm waveguides (8A-1, 8A-2) for a push-pull modulation. A first electrode (13-1) connected to p-type cladding layer (4-1) of modulator arm (8A-1) is maintained at a negative potential V π , a second electrode (13-2) connected to n-type cladding layer (2-1a) of modulator arm (8A-1) and p-type cladding layer (4-2) of modulator arm (8A-2) is driven by a drive voltage, and a third electrode (13-3) connected to n-type cladding layer (2a-2) of modulator arm (8A-2) is maintained at a ground potential. The drive voltage changes between V π , and V π/2 for push-pull modulation by both modulator arms (8A-1, 8A-2).

Abstract translation: 半导体马赫 - 曾德调制器包括用于推挽调制的一对相位调制器臂波导（8A-1，8A-2）。 连接到调制器臂（8A-1）的p型包层（4-1）的第一电极（13-1）保持在负电位V pi，与n型连接的第二电极（13-2） 调制臂（8A-1）的包层（2-1a）和调制臂（8A-2）的p型包覆层（4-2）由驱动电压驱动，第三电极（13-3） 与调制臂（8A-2）的n型包覆层（2a-2）连接的接地电位保持在接地电位。 驱动电压在两个调制器臂（8A-1，8A-2）之间的推挽调制的V pi和V pi / 2之间变化。

公开(公告)号：EP0841587A3

公开(公告)日：1998-11-25

申请号：EP97308615.0

申请日：1997-10-28

Applicant: NORTHERN TELECOM LIMITED

Inventor： Yu, Jun

IPC: G02F1/225 ,  G02F1/025

CPC classification number: B82Y20/00 ,  G02F1/01708 ,  G02F1/225 ,  G02F1/2257 ,  G02F2201/126 ,  G02F2203/20 ,  G02F2203/25

Abstract: A multi-quantum-well Mach-Zehnder optical phase modulator selectively generates positive and negative frequency chirp. The modulator has an asymmetric input y-junction coupler and an asymmetric output y-junction coupler joined by interferometric arms defining two optical paths of unequal length so as to generate a fixed phase difference of π or an integral odd multiple thereof. The modulator has electrodes on each arm for receiving modulating electric fields in a push-pull relationship. A control electrode is provided on one of the arms for receiving a control electric field. The modulator, when driven without any control electric field generates negative frequency chirp, and selectively generates positive frequency chirp in response to adjustment of the control electric field. As an alternative, the length differential between respective arms can be selected to generate a phase difference of π/2, in which case control electrodes are required on each of the interferometric arms. A method of selectively generating a modulated optical signal having selectively configurable frequency chirp is also described.