Lieven B Verslegers

20140010498, Jan 9, 2014

Jul 8, 2013

13/936408

Lieven Verslegers - La Jolla CA, US
Attila Mekis - Carlsbad CA, US

G02B 6/42

385 37

Methods and systems for grating couplers incorporating perturbed waveguides are disclosed and may include in a semiconductor photonics die, communicating optical signals into and/or out of the die utilizing a grating coupler on the die, where the grating coupler comprises perturbed waveguides. The perturbed waveguides may comprise a variable width along their length. The grating coupler may comprise a single polarization grating coupler comprising perturbed waveguides and a non-perturbed grating. The grating coupler may comprise a polarization splitting grating coupler (PSCC) that includes two sets of perturbed waveguides at a non-zero angle, or a plurality of non-linear rows of discrete shapes. The PSCC may comprise discrete scatterers at an intersection of the sets of perturbed waveguides. The grating couplers may be etched in a silicon layer on the semiconductor photonics die or deposited on the semiconductor photonics die. The grating coupler may comprise individual scatterers between the perturbed waveguides.

20130107164, May 2, 2013

Oct 28, 2011

13/284486

Lieven Verslegers - La Jolla CA, US
Xiao-fan Feng - Camas WA, US

Sharp Laboratories of America, Inc. - Camas WA

G02F 1/1335

349 61

A liquid crystal display includes a backlight that provides light and selectively modifies the transmission of light from the backlight to the front of the display. The backlight includes a plurality of spaced apart light waveguides and a plurality of selection elements associated with the light waveguides that change the characteristics of the material of the light waveguides to selectively direct the transmission of light toward the liquid crystal layer. The combination of the waveguides and the selection elements provide light to the front of the display in a non-uniform temporal manner and a non-uniform spatial manner during a frame.

20220413234, Dec 29, 2022

Jun 25, 2021

17/358314

- Mountain View CA, US
Ryohei Urata - San Carlos CA, US
Lieven Verslegers - Redwood City CA, US
Jan Petykiewicz - Palo Alto CA, US

G02B 6/42
G02B 6/30
G02B 6/12

A system for passive alignment of fibers to an interface of a photonic integrated circuit (PIC) includes an input frame, an actuator, and an output frame. The actuator arranged to apply force along a force axis to the input frame. The output frame including a tip for picking up a plate and transferring the force thereto, the output frame being connected to the input frame such that the output frame may tilt relative to the input frame and the output frame is elastically biased relative to the input frame into a position wherein the tip is aligned on the force axis.

20200363646, Nov 19, 2020

Aug 5, 2020

16/985301

- Mountain View CA, US
Lieven Verslegers - San Mateo CA, US
Hong Liu - Palo Alto CA, US
Daoyi Wang - San Jose CA, US

G02B 27/28
G02B 27/09
G02B 6/126
G02B 6/10
G02B 6/27
G02F 1/09
G02B 5/30

A photonic integrated circulator can be fabricated by including a plurality of polarizing beam splitters and optical polarization rotators such that two copies of the optical signal are output at a receiver in substantially aligned polarization states. The circulator can be used for facilitating bi-directional communications between photonic integrated circuit devices, which are inherently polarization sensitive, while reducing signal loss.

20200310053, Oct 1, 2020

Apr 1, 2019

16/371800

- Mountain View CA, US
Lieven Verslegers - San Mateo CA, US
Jill Berger - Saratoga CA, US

G02B 6/42
G02B 6/34
B23K 1/00
H05B 3/03
H05B 3/12

An apparatus including a photonic integrated circuit (PIC) coupled to an optical bench is disclosed. The PIC includes at least one grating coupler disposed thereon and the optical bench includes an optical system disposed thereon. The apparatus also includes an integrated heater at an upper surface of the PIC under the optical bench or at a bottom surface of the optical bench over the PIC. The apparatus also includes a layer of solder disposed between the PIC and the optical bench for coupling the bottom surface of the optical bench to the PIC. In some implementations, the layer of solder is in thermal communication with the integrated heater.

20200280372, Sep 3, 2020

Jul 19, 2019

16/517151

- Mountain View CA, US
Ryohei Urata - San Carlos CA, US
Xiang Zhou - Sunnyvale CA, US
Lieven Verslegers - San Mateo CA, US

H04B 10/50
H04B 10/40
H01S 3/10
H01S 3/105
H01S 3/106
H01S 5/00

A dual-mode optical transceiver is disclosed. The dual-mode optical transceiver includes a receiver section configured to receive both coherently modulated and intensity modulated optical signals and to be optically switched between a first receiver mode for direct detection and a second receiver mode for coherent detection, and a transmitter section including a nested Mach-Zehnder Modulator or a polarization multiplexed quad Mach-Zehnder Modulator configured to be operated in a first transmission mode to output an intensity modulated optical signal and a second transmission mode to output a coherently modulated optical signal. In some implementations, the dual-mode optical receiver includes an optical switch configured to selectively direct a received optical signal down a direct detection optical circuit or a coherent detection optical circuit based on a control signal applied to the optical switch.

20200241222, Jul 30, 2020

Jan 29, 2019

16/261211

- Mountain View CA, US
Lieven Verslegers - San Francisco CA, US
Ryohei Urata - San Carlos CA, US

G02B 6/42

A photonic integrated circuit for coupling a laser from an optical assembly to a grating coupler is disclosed. A method for coupling a laser to a photonic integrated circuit is disclosed. The optical assembly includes an optical system disposed on a v-groove bench. The optical system typically includes a laser source, a coupling lens or lens system, an optional isolator, a beam redirector that includes a prism or other light turning element and a cylindrical tube mounted on the v-groove bench. The method of tuning the angle of incidence from the optical assembly to the grating coupler is also disclosed.

20200162165, May 21, 2020

Mar 19, 2019

16/358200

- Mountain View CA, US
Lieven Verslegers - San Mateo CA, US
Hong Liu - Palo Alto CA, US
Ryohei Urata - San Carlos CA, US

H04B 10/516
H04L 25/03

Systems and methods of transmitting direct detection optical signal are provided. A direct detection optical transmitter according to illustrative embodiments includes a Mach Zehnder Modulator (MZM) configured to modulate laser light based on an electrical drive signal to generate a modulated optical signal and a complementary-modulated optical signal. The optical transmitter includes an optical finite impulse response (FIR) filter configured to receive the complementary-modulated optical signal and generate a filtered optical signal. The optical transmitter includes a polarization rotator configured to receive the filtered optical signal and output a rotated optical signal. The optical transmitter includes an optical combiner configured to combine the modulated optical signal and the rotated optical signal. The optical transmitter includes an output port configured to output the combined optical signal.