Abstract:
Disclosed is a transmitter optical module which includes a first package generating an optical signal; a second package bonded with the first package by using chip-to-chip bonding, having a silicon optical circuit platform structure, and amplifying the optical signal; and an optical waveguide forming a transmission path of the optical signal from the first package to the second package.
Abstract:
Disclosed is a transmitter optical module which includes an electro-absorption modulated laser modulating a light into an optical signal through a high-frequency electrical signal; a first sub-mount transferring the high-frequency signal to the electro-absorption modulated laser; and a second sub-mount receiving the high-frequency signal from the electro-absorption modulated laser to terminate the electro-absorption modulated laser. A length of a first wire connecting the first sub-mount and the electro-absorption modulated laser is different from a length of a second wire connecting the second sub-mount and the electro-absorption modulated laser.
Abstract:
Provided is an optical module. The optical module includes: an optical bench having a first trench of a first depth and a second trench of a second depth that is lower than the first depth; a lens in the first trench of the optical bench; at least one semiconductor chip in the second trench of the optical bench; and a flexible printed circuit board covering an upper surface of the optical bench except for the first and second trenches, wherein the optical bench is a metal optical bench or a silicon optical bench.
Abstract:
Provided are an optical switch device having a simple light path and capable of achieving high speed switching, and a method of manufacturing the optical switch device. The optical switch device comprises one or more first optical waveguides extending in a first direction, one or more second optical waveguides connected to the first optical waveguides in a second direction crossing the first direction, and one or more switching parts configured to control light transmitted in the first direction within the first optical waveguide connected with the second waveguide, to selectively reflect the light to the second waveguide extending in the second direction.
Abstract:
Provided is a wavelength selective switch (WSS), and more particularly, a wavelength selective switch for electrically switching a wavelength without physical displacement. The wavelength selective switch includes an optical demultiplexer for dividing an input optical signal into signals having wavelengths corresponding to respective channels, selecting either the optical signal of each channel obtained by dividing the input optical signal or an optical signal input via an add port, and outputting the selected optical signal; and an optical multiplexer including an optical deflecting unit for individually deflecting the optical signals of the respective channels received from the optical demultiplexer according to supplied current or applied voltage, wherein the optical signal of each channel deflected by the optical deflecting unit is output to a specific output port. In the wavelength selective switch, current is supplied to the optical deflectors to switch the channels, resulting in higher reliability, smaller volume and higher switching speed than a conventional wavelength selective switch using mechanical displacement to switch channels.
Abstract:
Serial interface circuits include first and second data registers (RXDR, TXDR) responsive to first and second register control signals (Idrd, Idts), respectively, and a shift register (SISOR) responsive to a shift clock signal. The preferred shift register has a serial input port, a serial output port and a parallel input/output port electrically coupled to the first and second data registers. A preferred controller circuit is also provided. This controller circuit, which is responsive to a frame synchronization signal (Fsync), generates the first and second register control signals during nonoverlapping time intervals. The frame synchronization signal has a first pulse width during a first time interval and the controller circuit also includes a half-frame synchronization signal generator which generates a half-frame synchronization signal (Hlf_Fsync) having a second pulse width during the first time interval. The controller circuit also includes a data register controller to generate the first and second register control signals as respective pulses during the first time interval. The half-frame synchronization signal is preferably generated as a pulse during a second-half of the first time interval and the first and second register control signals are preferably generated as respective pulses during the second-half of the first time interval. If the second-half of the first time interval is defined as a second time interval, then the first register control signal is preferably generated as a pulse during a first-half of the second time interval and the second register control signal is preferably generated as a pulse during a second-half of the second time interval.
Abstract:
Provided are a spot size converter and a method of manufacturing the spot size converter. The method includes stacking a lower clad layer, a core layer, and a first upper clad layer on a substrate, tapering the first upper clad layer and the core layer in a first direction on a side of the substrate, forming a waveguide layer on the first upper clad layer and the lower clad layer, and etching the waveguide layer, the first upper clad layer, the core layer, and the lower clad layer such that the waveguide layer is wider than a tapered portion of the core layer on the side of the substrate and has the same width as that of the core layer on another side of the substrate.
Abstract:
Disclosed is a transmitter optical module which includes an electro-absorption modulated laser modulating a light into an optical signal through a high-frequency electrical signal; a first sub-mount transferring the high-frequency signal to the electro-absorption modulated laser; and a second sub-mount receiving the high-frequency signal from the electro-absorption modulated laser to terminate the electro-absorption modulated laser. A length of a first wire connecting the first sub-mount and the electro-absorption modulated laser is different from a length of a second wire connecting the second sub-mount and the electro-absorption modulated laser.
Abstract:
Distributed feedback-laser diodes are provided. The distributed feedback-laser diode may include a substrate, a lower cladding layer having a grating on the substrate, an active layer disposed on the lower cladding layer, a first upper cladding layer disposed on the active layer, a phase-shift region extending in a first direction on the first upper cladding layer, and a ridge waveguide layer extending in a second direction crossing the first direction on the phase-shift region.
Abstract:
The inventive concept provides optical switch devices and methods of manufacturing the same. The optical switch device may include a substrate including a first region and a second region, a first multi-mode optical waveguide disposed on the substrate of the first region, an electrode wire disposed on the substrate of the second region, a heater disposed on a top surface of the first multi-mode optical waveguide, and connection wires connecting the heater to the electrode wire. The first multi-mode optical waveguide may have incline sidewalls, and the connection wires may be disposed on the incline sidewalls of the first multi-mode optical waveguide.