Abstract:
The present invention provides a photonic integrated circuit, system, apparatus and method which can be used as an optical transmitter in a system, for example in, a telecommunication system. According to the various embodiments of the invention, the circuit includes several optical devices, wherein some are passive and others have gain, which constructed and connected with the specific characteristics, leads to a multi -wavelength transmitter with tunable operation band.
Abstract:
In various embodiments, wavelength beam combining laser systems incorporate optics having optical power along the non-WBC direction (and/or the slow-diverging axis) of the combined multi-wavelength beam proximate to or combined with the partially reflective output coupler in order to correct pointing variation in the non-WBC direction (and/or the slow-diverging axis).
Abstract:
Stabilization of an injection locked optical frequency comb is achieved through polarization spectroscopy of an active laser cavity, eliminating optical PM sidebands inherent in previous stabilization methods. Optical SNR of 35 dB is achieved. A monolithic AlInGaAs quantum well Fabry-Prot laser injection locked to a passively mode-locked monolithic laser is presented here. The FP laser cavity can be used as a true linear interferometric intensity modulator for pulsed light.
Abstract:
A laser that emits light at all available frequencies distributed throughout the spectral bandwidth or emission bandwidth of the laser in a single pulse or pulse train is disclosed. The laser is pumped or seeded with photons having frequencies distributed throughout the superunitary gain bandwidth of the gain medium. The source of photons is a frequency modulated photon source, and the frequency modulation is controlled to occur in one or more cycles timed to occur within a time scale for pulsing the laser.
Abstract:
A pulsed laser system may include a Raman fiber that is configured to act as multiple wavelength Raman laser. The fiber is configured to receive a pulsed input beam from an input source and convert the input beam to an output beam having narrow band outputs at first and second frequencies.
Abstract:
Disclosed is a laser oscillation device. According to the present invention, a second substrate is positioned in the upper part of a first substrate in such a manner that wedge cells are formed between the first and second substrates, and a liquid crystal layer is formed by two or more liquid crystals having different pitches which are injected into the wedge cells. The invention enables a consecutive wavelength-variable lasing process in a certain wavelength region.
Abstract:
레이저 발진소자가 개시된다. 제2기판은 제1기판의 상부에 구비되어 제1기판과의 사이에 쐐기형 셀(wedge cell)을 형성하며, 액정층은 쐐기형 셀에 주입되는 피치가 서로 다른 두 개 이상의 액정에 의해 형성된다. 본 발명에 따르면 일정 파장영역에서 연속적 파장 가변 레이징이 가능하다.
Abstract:
In a light amplification system and technique, a pump source provides pump power at a source wavelength. The pump power is launched as an input into a cascaded Raman resonator A wavelength-dependent loss element is connected such that it precedes the cascaded Raman resonator. The wavelength-dependent loss element is configured to transmit light power at the source wavelength with low loss, and to provide high loss at the first Stokes shift. The wavelength-dependent loss element prevents buildup of light power between the pump source and the cascaded Raman resonator, thereby preventing backward propagation of light power back into the pump source.