Infinera Corporation

Jds Uniphase Corporation

Atul Mathur

David F Welch

Fred A Kish, Jr

Charles H Joyner

Vincent G Dominic

Radhakrishnan L Nagarajan

Richard P Schneider

Mark Missey

Stephen G Grubb

Frank H Peters

Alan C Nilsson

Robert B Taylor

Matthew L Mitchell

Jonas Webjorn

Frank Peters

Ting-Kuang Chiang

Drew Daniel Perkins

Marco Sosa

Andrew G Dentai

Mehrdad Ziari

Masaki Kato

Donald J Pavinski

Sheila K Hurtt

Damien Lambert

Damien Jean Henri Lambert

Randal A Salvatore

Robert Grencavich

Vinh D Nguyen

Donald J Pavinski, Jr

Mark J Missey

Marco E Sosa

A semiconductor monolithic transmitter photonic integrated circuit (TxPIC) comprises two different situations, either at least one signal channel in the PIC having a modulated source with the channel also extended to include at least one additional element or a plurality of modulated sources comprising N signal channels in the PIC of different transmission wavelengths, where N is equal to or greater than two (2), which may also approximate emission wavelengths along a standardized wavelength grid. In these two different situations, a common active region for such modulated sources and additional channel elements is identified as an extended identical active layer (EIAL), as it extends from a single modulated source to such additional channel elements in the same channel and/or extends to additional modulated sources in separate channels where the number of such channels is N equal to two or greater. The emission wavelength of laser sources in the modulated sources have different positively detuned offsets of the laser emission wavelength relative to the laser active region wavelength, i.e., (&#x3bb;&#x2212;&#x3bb;&#x3e;0), and their emission wavelengths form a wavelength grid which may substantially conform to a standardized wavelength grid, such as the ITU grid. These laser sources in the modulated sources with an EIAL are preferentially detuned in the range, for example, of about 20 nm to about 70 nm, preferentially from about 25 nm to about 50 nm, from the active region wavelength of the modulated sources.

Monolithic photonic integrated circuit (PIC) with a plurality of integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL)

A method provides acceptable performance from a semiconductor transmitter photonic integrated circuit (TxPIC) that contains a plurality of modulated sources each comprising a laser source and an external modulator where each laser source provides a different emission wavelength and each modulated source forms a separate signal channel, comprising the steps of providing at least some of the signal channels with an extended identical active layer (EIAL) so that the modulated sources each have an identical active region wavelength and detuning the laser emission wavelength in each laser source within the EIAL from the laser active region wavelength.

Method of achieving acceptable performance in and fabrication of a monolithic photonic integrated circuit (PIC) with integrated arrays of laser sources and modulators employing an extended identical active layer (EIAL)

A photonic integrated circuit (PIC) chip comprising an array of modulated sources, each providing a modulated signal output at a channel wavelength different from the channel wavelength of other modulated sources and a wavelength selective combiner having an input optically coupled to received all the signal outputs from the modulated sources and provide a combined output signal on an output waveguide from the chip. The modulated sources, combiner and output waveguide are all integrated on the same chip.

Transmitter photonic integrated circuit (TxPIC) chip

Transmitter photonic integrated circuit (TxPIC) chips

Monolithic transmitter photonic integrated circuit (TXPIC) with a transversely disposed output

Monolithic transmitter photonic integrated circuit (TxPIC) with a traversely disposed output

Optical transport network having a plurality of monolithic photonic integrated circuit semiconductor chips

Photonic integrated circuit (PIC) chips

Transmitter photonic integrated circuits (TXPICS) with directly modulated lasers and wavelength selective combiners

Monolithic transmitter photonic integrated circuit (TxPIC) semiconductor chip

A monolithic photonic integrated circuit (PIC) chip where the active waveguide cores of the modulated sources of the PIC are multiple quantum wells (MQWs) and the passive waveguide cores of an optical combiner are a bulk layer or material. The cores of the waveguide cores may be a quaternary such as InGaAsP or InAlGaAs.

Method of manufacturing and apparatus for a transmitter photonic integrated circuit (TXPIC) chip

Monolithic transmitter photonic integrated circuit (TxPIC) with integrated optical components in circuit signal channels

Transmitter photonic integrated circuits (TxPIC) and optical transport networks employing TxPICs

An optical transport network comprises a monolithic transmitter photonic integrated circuit (TxPIC) InP-based chip and a monolithic receiver photonic integrated circuit (RxPIC) InP-based chip.

Optical transport network

A method is disclosed for optimizing optical channel signal demultiplexing in a monolithic receiver photonic integrated circuit (RxPIC) chip by providing an integrated channel signal demultiplexing with multiple waveguide input verniers provided to an WDM signal demultiplexer. The RxPIC chip may optionally include an integrated amplifier in at least some of the waveguide input verniers. The RxPIC chip may be comprised of, in monolithic form, a plurality of optional semiconductor optical amplifiers (SOAs) at the input of the chip to receive a WDM signal from an optical link which is provided along a plurality of waveguide input verniers to an integrated optical demultiplexer, such as, but not limited to, an arrayed waveguide grating (AWG), as a WDM signal demultiplexer. Thus, optical outputs from the respective semiconductor laser amplifiers are provided as vernier inputs to the optical demultiplexer forming a plurality of input verniers at the input to the optical demultiplexer. One of the vernier inputs to the chip is selected for operation in the RxPIC chip that corresponds to an optimum performance in matching a WDM channel signal wavelength grid of the received WDM signal to a wavelength grid of the on-chip optical demultiplexer.

Method of optimizing optical channel signal demultiplexing in a monolithic receiver photonic integrated circuit (RxPIC)

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Santa Clara, CA, United States of America

Atul Mathur