阅读说明：本技术 一种可调谐激光器 (Tunable laser ) 是由 罗俊 冯志勇 于 2017-05-04 设计创作，主要内容包括：一种可调谐激光器(300、1100),包括增益模块(301、1101)、正弦梳状滤波器(302、1103)、窄带梳状滤波器(303、1102)、波长配置电路(304、1105)和波长调谐电路(305、1104)。正弦梳状滤波器(302、1103)具有相互间隔的带通滤波窗口,窄带梳状滤波器(303、1102)具有相互间隔的带通滤波窗口。波长配置电路(304、1105)用于接收波长信息,根据波长信息设置第一波段的位置,波长调谐电路(305、1104)用于调谐窄带梳状滤波器(303、1102)的带通滤波窗口,使第一波段和第二波段重叠。可调谐激光器(300、1100)能够快速调谐激光。(A tunable laser (300, 1100) comprises a gain module (301, 1101), a sinusoidal comb filter (302, 1103), a narrow band comb filter (303, 1102), a wavelength configuration circuit (304, 1105) and a wavelength tuning circuit (305, 1104). The sinusoidal comb filters (302, 1103) have mutually spaced bandpass filter windows and the narrowband comb filters (303, 1102) have mutually spaced bandpass filter windows. The wavelength configuration circuit (304, 1105) is configured to receive wavelength information, set a position of the first band based on the wavelength information, and the wavelength tuning circuit (305, 1104) is configured to tune a bandpass filter window of the narrowband comb filter (303, 1102) such that the first band overlaps the second band. The tunable laser (300, 1100) is capable of rapidly tuning the laser.)

A tunable laser, comprising:

the device comprises a gain module, a sine comb filter, a narrow-band comb filter, a wavelength configuration circuit and a wavelength tuning circuit, wherein the sine comb filter is respectively connected with the gain module, the narrow-band comb filter and the wavelength configuration circuit, and the wavelength tuning circuit is connected with the narrow-band comb filter;

the gain module is used for generating an optical signal under the control of external input current;

the sine comb filter is provided with mutually spaced band-pass filtering windows and is used for filtering the optical signal generated by the gain module, and the free spectral region of the sine comb filter is not smaller than the bandwidth of the gain spectrum of the gain module;

the narrow-band comb filter is provided with mutually spaced band-pass filtering windows and is used for filtering the optical signals filtered by the sine comb filter;

the wavelength configuration circuit is used for receiving wavelength information and setting the position of a first waveband according to the wavelength information, wherein the first waveband is a central waveband corresponding to a band-pass filtering window of the sine comb filter on a target waveband, and the target waveband is a waveband corresponding to a gain spectrum of the gain module;

the wavelength tuning circuit is used for tuning a band-pass filtering window of the narrow-band comb filter to enable the first wave band and a second wave band to be overlapped, wherein the second wave band is a wave band corresponding to the band-pass filtering window of the narrow-band comb filter on the target wave band.

The tunable laser of claim 1,

when the wavelength corresponding to the wavelength information belongs to the first half of the target waveband, the wavelength configuration circuit is specifically configured to align the first waveband with the first half of the target waveband;

when the wavelength corresponding to the wavelength information belongs to the second half of the target waveband, the wavelength configuration circuit is specifically configured to align the first waveband with the second half of the target waveband;

wherein the bandwidth of the first band is equal to half of the bandwidth corresponding to the gain spectrum.

The tunable laser of claim 2, wherein the FSR of the sinusoidal comb filter is equal to twice the FSR of the narrowband comb filter.

A tuneable laser according to anyone of claims 1 to 3, wherein the sinusoidal comb filter is a mach-zehnder filter or a ring resonator filter and the narrow-band comb filter is a distributed bragg feedback filter or a ring resonator filter.

A tunable laser according to any one of claims 1 to 3, wherein the material of the sinusoidal comb filter is indium phosphide, silicon on insulator or polymer waveguide, and the material of the narrow-band comb filter is indium phosphide, silicon on insulator or polymer waveguide.

The tunable laser of any one of claims 1 to 3, further comprising a phase adjustment module connected to the gain module and the sine comb filter, respectively.

The tunable laser of claim 6, wherein the material of the phase adjustment module is indium phosphide, silicon on insulator, or polymer waveguide.

A tunable laser, comprising:

the device comprises a gain module, a narrow-band comb filter, a sine comb filter, a wavelength tuning circuit and a wavelength configuration circuit, wherein the narrow-band comb filter is respectively connected with the gain module, the sine comb filter and the wavelength tuning circuit, and the wavelength configuration circuit is connected with the sine comb filter;

the gain module is used for generating an optical signal under the control of external input current;

the narrow-band comb filter is provided with mutually spaced band-pass filtering windows and is used for filtering the optical signals generated by the gain module;

the sine comb filter is provided with mutually spaced band-pass filtering windows and is used for filtering the optical signal filtered by the narrow-band comb filter, and the free spectral region of the sine comb filter is not smaller than the bandwidth of the gain spectrum of the gain module;

the wavelength configuration circuit is used for receiving wavelength information and setting the position of a first waveband according to the wavelength information, wherein the first waveband is a central waveband corresponding to a band-pass filtering window of the sine comb filter on a target waveband, and the target waveband is a waveband corresponding to a gain spectrum of the gain module;

the wavelength tuning circuit is used for tuning a band-pass filtering window of the narrow-band comb filter to enable the first wave band and a second wave band to be overlapped, wherein the second wave band is a wave band corresponding to the band-pass filtering window of the narrow-band comb filter on the target wave band.

The tunable laser of claim 8,

when the wavelength corresponding to the wavelength information belongs to the first half of the target waveband, the wavelength configuration circuit is specifically configured to align the first waveband with the first half of the target waveband;

when the wavelength corresponding to the wavelength information belongs to the second half of the target waveband, the wavelength configuration circuit is specifically configured to align the first waveband with the second half of the target waveband;

wherein the bandwidth of the first band is equal to half of the bandwidth corresponding to the gain spectrum.

The tunable laser of claim 9, wherein the FSR of the sinusoidal comb filter is equal to twice the FSR of the narrowband comb filter.

A tuneable laser according to anyone of claims 8 to 10, wherein the sinusoidal comb filter is a mach-zehnder filter or a ring resonator filter and the narrow band comb filter is a distributed bragg feedback filter or a ring resonator filter.

A tunable laser according to any one of claims 8 to 10, wherein the material of the sinusoidal comb filter is indium phosphide, silicon on insulator or polymer waveguide, and the material of the narrow-band comb filter is indium phosphide, silicon on insulator or polymer waveguide.

The tunable laser of any one of claims 8 to 10, further comprising a phase adjustment module connected to the gain module and the narrowband comb filter, respectively.

The tunable laser of claim 13, wherein the material of the phase adjustment module is indium phosphide, silicon on insulator, or polymer waveguide.