A light generator with high optical output power.

Abstract

This invention relates to a light generator used in various fiber optic sensor systems and precision optical applications, particularly military and industrial, and specifically to an enhanced spontaneous emission (ASE) based, double-pass and high optical output power light generator (10) that has high temperature-dependent wavelength stability, includes a Faraday converter mirror (4) to minimize back reflection losses, and is developed to improve sensor performance by increasing signal strength, improving detection sensitivity and extending data transmission distance without requiring additional optical components in fiber optic sensor systems.

Description

1 TARIFF A light generator with high optical output power. RELATED TECHNICAL FIELD This invention is suitable for various fiber optic sensor systems, particularly for military and industrial applications. This relates to a light generator used in precision optical applications, specifically fiber optic 5. Filtering signal strength in sensor systems without requiring additional optical components. to upgrade the sensor, increase detection sensitivity and extend data transmission distance. Developed to improve its performance, it has high temperature-dependent wavelength stability, and returns Enhanced, featuring a Faraday converter mirror to minimize reflection losses. A spontaneous emission (ASE) based, double-pass light with high optical output power. It is related to the generator. STATE OF THE ART Traditional enhanced spontaneous emission (ASE) based light sources use fiber optic sensors. They are generally used in systems with single-pass structures. Single-pass traditional ASE 15 base light sources perform the optical amplification process in only one direction. It consists of a structure. The basic components of the system include a pump, a laser, and a gain It includes a fiber optic cable and a wavelength division multiplexer. Such systems typically have 50-75 fiber optic cables. It offers low optical output power in the mW range and wavelength. This also brings limitations in terms of its stability. In addition; back 20 losses due to reflections and failure to optimize spectral width, etc. These shortcomings also negatively affect system performance. Therefore, nowadays Work is still ongoing to improve the issues listed above. In the Chinese patent application number CN110707516A, which is included in the known state of the art. a pump laser, a wavelength division multiplexer, 4-6 m long erbium-doped fiber, 25 A single-pass ASE light generator containing an optical fiber light trap, an isolator, and a filter. The configuration is described; it is claimed to be high-powered, and its optical output power and No data regarding wavelength stability has been found. However, studies conducted using the relevant technique have shown this. According to research, in single-pass configurations, reflection affects system performance. The negative impact of temperature on wavelength stability is known, and it is particularly dependent on temperature. to meet the requirements of optical systems that require high wavelength stability It is understood that it will not be able to reach the performance level. Therefore, the aforementioned The invention described in the document relates to strategic-level fiber optic gyroscopes, such as those with wavelength stability. 2 Preferred for use in optical systems where it directly affects system performance. It is not being done and therefore needs to be improved. United States, under known state of the art, number US5875203A. The patent document describes a double-pass light source; the pump, wavelength, At least one parameter selected from the group consisting of pump power feedback and temperature is 5. when modified, in such a way as to produce a stable average wavelength of the optical signal. The selection is mentioned. The invention described in the document is fiber optic. By using components and spectral filters, we suppressed unwanted wavelengths and the output The stability of the spectrum has been ensured, and filtered and unfiltered results have been shared. According to the invention, the optical output power obtained with this invention provides the desired sensitivity in detection of 10. It falls short of reaching that level and is therefore not preferred. In conclusion, the solution to the negative situations described above will be found using the relevant technique. It has become apparent that there is a need to develop a light generator that will bring this about. Details are below. The invention described is a Faraday converter mirror and additional erbium that acts as a filter. Thanks to the combined use of reinforced fiber, advanced wavelength stabilization techniques are achieved with 15 It has an optical output power of 108 mW in Gaussian spectrum distribution and a stabilization range. It offers significant innovations in its parameters that are not found in the literature. PURPOSE OF THE INVENTION AND A BRIEF DESCRIPTION OF THE INVENTION This invention, a light generator used in fiber optic sensor systems and various optical applications, has 20 relevant, and in particular; in fiber optic sensor systems, without requiring additional optical components. By filtering, we can increase signal strength, improve detection sensitivity, and enhance data transmission. Developed to improve sensor performance by extending the range, temperature-dependent Faraday wavelength stability is achieved by minimizing return reflection losses. a converter mirror-based, enhanced spontaneous emission (ASE) based, double-pass and high 25 It relates to a light generator with optical output power. The primary aim of the invention is to produce an enhanced spontaneous emission with high optical output power. The goal is to provide an (ASE) based light generator. One purpose of the invention is to increase the signal strength in the fiber optic sensor system in which it is used. The goal is to develop a light generator that increases detection sensitivity. 30 One aim of the invention is to minimize reflection losses using a Faraday transducer. The goal is to provide a light generator that includes a mirror. 3 Another aim of the invention was to maximize optical gain by filtering light through erbium. The goal is to develop a light generator that allows light to pass through a doped fiber twice. Another aim of the invention is to improve the accuracy of the sensors under varying environmental conditions and erbium-doped, which acts as a spectral filter integrated to maintain its reliability. The goal is to provide a light generator containing fiber optics. 5 Another aim of the invention is to minimize the impact of environmental changes, thereby extending lifespan. Wavelength stability under varying temperature conditions that can provide long-term stability. The goal is to develop an improved ASE-based light generator. Another aim of the invention is to improve the stability of the fiber optic sensor system in which it is used. The goal is to develop a high-power ASE-based light generator that provides 10. All the advantages mentioned above and which will be understood from the detailed explanation below. The present invention is designed to implement fiber optic sensor systems and precision optics. The components used in these applications primarily include a pump laser and a wavelength-division multiplexer. Enhanced spontaneous emission consisting of a gain fiber and a filter fiber optic component. It is a high-power light generator based on (ASE), and specifically; 15 - to gain optical output power, the light coming from the aforementioned gain fiber output, By rotating its polarization 90 degrees, the reflected light travels through the gain fiber. a Faraday converter mirror that allows for a second pass It includes. All structural and characteristic features and advantages of the invention are given in the figures below and these 20 more clearly with detailed explanations written with references to figures This will be understood. Therefore, the evaluation should also take these figures and detailed explanations into account. It must be done while being present. BRIEF DESCRIPTION OF THE FIGURES 25 The invention relates to example applications of a light generator with high optical output power. as shown in the attached figures, of these figures: Figure 1. An example schematic representation of the light generator that is the subject of the invention. Figure 2 shows an example graph of the spectrum of the light generator that is the subject of the invention. Figure 3. Temperature-dependent wavelength stability of the light generator subject to the invention. This is an example graph. 4 The parts in the figures are individually numbered, and the corresponding numbers are listed below. It has been given. light generator (10) pump laser (1) wavelength division multiplexer (2) 5 gain fiber (3) Faraday converter mirror (4) filter fiber (5) DETAILED DESCRIPTION OF THE INVENTION 10 This invention is suitable for various fiber optic sensor systems, particularly for military and industrial applications. It relates to a light generator used in precision optical applications, specifically fiber optics. Filtering signal strength in sensor systems without requiring additional optical components. to upgrade the sensor, increase detection sensitivity and extend data transmission distance. Developed to improve its performance, it has high temperature-dependent wavelength stability, back 15 Containing a Faraday converter mirror (4) to minimize reflection losses, an enhanced spontaneous emission (ASE) based, double-pass and high optical output power It is related to the light generator (10). Figure 1 shows an example of the light generator (10) which is the subject of the invention. A schematic view is given; this light generator (10); a pump laser (1), a wavelength a splitter (2), a gain fiber (3), 20 from the output of the said gain fiber (3) by rotating the polarization of the light by 90 degrees, the reflected light gains the fiber (3) a Faraday converter mirror (4) and filter that allows a second pass through it The subject of the invention is the light generator (10), which consists of fiber (5) optical components. It has a double-pass structure thanks to the Faraday converter mirror (4). The pump laser (1) used in the light generator (10) which is the subject of the invention, has a wavelength of 980 nm. It operates at a constant temperature with the help of a temperature controller with a driving current of 400 mA. It is a laser source that is operated. The pump laser (1) has one output fiber. and acts as the basic energy source of the light generator (10) and gain fiber (3) pumped light necessary to initiate the stimulated emission process within it It produces. 30 The wavelength division multiplexer (2) included in the invention has two input and one output fiber. It is an optical component that has an integrated isolator. One of the input fibers is 980 nm. one allows the passage of light at a certain wavelength, while the other allows the passage of light at a wavelength of 1,550 nm. Only light with a wavelength of 1,550 nm is transmitted in the output fiber. This wavelength... optical between pump laser (1) and gain fiber (3) in the output fiber of the splitter (2). By establishing the connection, it enables the unidirectional transmission of light at a wavelength of 1,550 nm. He knows. 5 The gain fiber (3) has at least one input and one output, with a length of at least 5 m. It is a coil with fiber that absorbs light at a wavelength of 980 nm, preferably erbium. It has the ability to pump its ions to high energy levels for stimulated emission. In the preferred application of the invention, the aforementioned gain fiber (3) is an erbium (Er) doped fiber. optical fiber; using rare earth elements, namely thulium (Tm) and ytterbium (Yb) instead of erbium. elements are used. In the preferred application of the invention, the pump laser (1) Ions excited by the light at a wavelength of 1,550 nm return to their ground energy levels. It spreads. This process creates a highly efficient gain environment with the advantages of low noise. It offers the light obtained from the output of the fiber (3) through the optical link. While the Faraday converter is directed to the mirror (4) via the input fiber, 15 Amplified light at wavelength of 1.550 nm towards the wavelength division multiplexer (2) It is being redirected. In the invention, a Faraday converter mirror (4) is directed light from the output of the gain fiber (3), By rotating the polarization of the light by 90 degrees, the reflected light gains the fiber (3) This allows for a second pass throughout. In this way, the optical gain is increased, resulting in a dual 20 A transitional structure is created. The gain fiber (3) of the light generator (10) described in this invention Thanks to its dual-pass structure created with the help of, the system's optical output power is 108 mW. It becomes possible to raise it to that level. The light with a wavelength of 1,550 nm obtained from the gain fiber (3) is named in the invention. After obtaining the wavelength from the output of the wavelength division multiplexer (2); 1-2 m 25 It is re-filtered with a filter fiber (5) of length. The preferred method of the invention The filter fiber (5) mentioned in the application is an erbium (Er) doped optical fiber; erbium Instead, rare earth elements such as thulium (Tm) and ytterbium (Yb) are used. The filter fiber in question (5) has the property of selectively transmitting unwanted wavelengths. By suppressing it, it ensures that only a specific bandwidth of light is transmitted. This 30 The mechanism increases spectral purity by reducing noise and improves the quality of the optical signal. It improves the filtering process preferably without requiring any additional optical components. This is done with the help of erbium-doped filter fiber (5). 6 The subject of the invention is a light generator with high optical power (10) and enhanced spontaneous emission. The (ASE) based light generation method involves the following steps: - A pump driven by a temperature controller with a 400 mA driving current. Light is produced by the laser (1) pumped at a wavelength of 980 nm. - The output fiber of the pump laser (1) is wavelength divided by optical arc fusion method 5 The multiplexer (2) is connected to the pump inlet port. This connection is 980 nm transfer of light at wavelength to wavelength division multiplexer (2) It provides. - The wavelength division multiplexer in question (2) emits light at a wavelength of 980 / 1.550 nm. The input fiber that allows transmission is 10 to the input fiber of erbium-doped gain fiber (3). It is combined by optical arc fusion method. 980 nm transmitted to the gain fiber (3) Light at this wavelength is used to excite erbium ions. - Preferably in erbium-doped gain fiber (3), light at a wavelength of 980 nm Erbium ions are excited by absorption and spontaneously emit light at a wavelength of 1,550 nm. Emission occurs. 15 - The light from the output of the erbium-doped gain fiber (3) is Faraday The light is directed to the transforming mirror (4). The Faraday transforming mirror (4) directs the light. By controlling its polarization, it provides feedback to the gain fiber (3) and this This results in a double-pass structure. - The 1.550 nm wavelength light obtained from the double-pass structure is mentioned in the 20 The wavelength division multiplexer (2) is transmitted to the output fiber. - wavelength division multiplexer (2) with a wavelength of 1.550 nm coming from the output fiber light passes through a filter fiber (5) with a length of 1-2 meters to the additional optical component It is filtered without requiring any additional filters. This process increases spectral purity by removing noise. It reduces. 25 Optical power and spectrum for the light obtained from the output of the aforementioned filter fiber (5) According to the measurements, the light generator that is the subject of this invention (10) has an optical output power of 108 mW and Light with a Gaussian structure, a spectral width of 11.4 nm, and a central wavelength of 1.564.5 nm was obtained. Figure 2 shows an example of the spectrum of the light generator (10) which is the subject of the invention. The graph is given. The subject of the invention is the 1.550 nm 30 light obtained from the light generator (10). Light at wavelength 1.564.5 nm exhibits a Gaussian spectral distribution, with a central point of 1.564.5 nm. It offers a wavelength and spectral width of 11.4 nm. In optical power measurement, it is 108 mW. 7 A high output power is achieved at this level. These features enable optical sensing and measurement. It successfully meets the high power requirements needed in these systems. In addition, the temperature-dependent wavelength of the light generator (10) in question is shown in Figure 3. An example graph regarding the stability test results is shared; this test was conducted at -40°C. It is carried out between +80°C. Accordingly, the wavelength is 5 throughout the entire temperature range. The stability is 7.1 ppm. These results indicate that the light generator (10), which is the subject of the invention, has a precise optical High stability independent of temperature variations, required in sensor applications. It proves that it provides. The subject of the invention is a light generator with high optical power (10); dual In the transition structure, use of Faraday converter mirror (4) and filter erbium fiber (5) Thanks to this, it offers high optical output power, spectral purity and wavelength stability, making it an optical 10. It meets the performance requirements in the systems. In particular, fiber optic sensors. by increasing signal strength in their systems, they improve detection sensitivity and environmental It offers an innovative solution that provides long-term stability against changes. This invention is ideal for many precision optical applications requiring high optical power and wavelength stability. It offers performance-enhancing solutions in practice. Today, laser spectroscopy is 15 Stable and robust for sensitive molecular analysis and gas detection processes in applications such as these. A light source is of critical importance. Similarly, a fiber optic gyroscope (FOD) In these systems, high optical power increases detection accuracy, while low wavelengths... Deviations are necessary to maintain the accuracy of gyroscopic measurements. Optical communication In these systems, low loss and consistent wavelength 20 during long-distance data transmission. the requirement is to provide reliable data at high speed while preserving the integrity of communication signals. It enables signal transmission. Furthermore, in remote sensing and lidar systems, it facilitates signal transmission. Its high power allows for precise detection and analysis of objects. This invention is necessary for advanced security applications such as quantum key distribution (QKD). It also offers a unique advantage in applications. 25 used in QKD systems Random number generators are a cornerstone of security protocols, and the wavelength of these systems... with its stability optical power requirements light generator (10) perfectly It is met. Double pass structure and Faraday converter mirror (4) and filter fiber (5) This combination enables QKD systems to operate with high accuracy and reliability. The subject of the invention, the ASE light generator (10), produces 30 light in the temperature range of -40°C to +80°C. The achieved 7.1 ppm wavelength stability ensures performance independent of environmental variations. It offers a unique solution for military and industrial systems requiring this invention. The subject is light generator (10); optical sensing, communication, quantum switch distribution and analysis. by optimizing system performance in technologies for a wide range of applications. It addresses. 35

Claims

8 REQUESTS 1. Primarily used in fiber optic sensor systems and precision optical applications; a pump laser (1), a wavelength division multiplexer (2), a gain fiber (3) and a filter enhanced spontaneous emission (ASE) based high fiber (5) optical components It relates to a light generator with power (10), the feature of which is; 5 - to gain optical output power, the light coming from the output of the aforementioned gain fiber (3), By rotating its polarization 90 degrees, the reflected light gains the fiber (3) a Faraday converter mirror (4) that allows a second pass through it It is characterized by its inclusion.

2. According to claim 1, a light generator (10) whose characteristic is that the aforementioned pump laser (1) has a 980 nm 10 operating at a specific wavelength, the temperature is controlled by a constant temperature controller with a driving current of 400 mA. It has a single output fiber that operates at high temperature.

3. According to claim 1, a light generator (10) is characterized by the aforementioned pump laser (1) and gain. providing the optical link between the fiber (3) and the single light with a wavelength of 1.550 nm It includes a wavelength division multiplexer (2) which allows directional transmission. 15 4. A light generator (10) according to claim 1 or 4, whose characteristic is; the aforementioned wavelength division The multiplexer (2) has two input and one output fiber and an integrated isolator. It is an optical component.

5. According to claim 1, a light generator (10) has the characteristic of; the gain of the aforementioned fiber (3) is 1.550 It is a coil that produces light at a wavelength of nm and must be at least 5 m long. 20 6. According to claim 1, a light generator (10) whose characteristic is that the aforementioned gain fiber (3) is erbium (Er) doped; thulium (Tm), ytterbium (Yb) or rare earth elements instead of erbium. It is composed of doped elements.

7. According to claim 1, a light generator (10) is characterized by having one of the aforementioned gain fibers (3). It has one input and one output fiber; 25 that absorbs light at a wavelength of 980 nm. It is a component.

8. According to claim 1, a light generator (10) has the following feature; the input of the aforementioned gain fiber (3). The light directed from the fiber to the wavelength division multiplexer (2) is 1.550 nm It is light that has been amplified at a certain wavelength.

9. According to claim 1, a light generator (10) has the characteristic of having an optical output power of 108 mW. It is a light source. 9 10. According to claim 1, a light generator (10) has the characteristic of being the aforementioned wavelength division. Additional optical light with a wavelength of 1.550 nm coming from the output fiber of the multiplexer (2) It contains a filter fiber (5) that filters without requiring any components.

11. According to claim 1, a light generator (10) is characterized by having one inlet to the aforementioned filter fiber (5). It is a coil with one output fiber and one output fiber, and its length is 1-2 m. 5 12. According to claim 1, a light generator (10) whose characteristic is that the aforementioned filter fiber (5) is erbium (Er) doped; thulium (Tm), ytterbium (Yb) or rare earth elements instead of erbium. It is composed of doped elements.

13. According to claim 1, a light generator (10) has the following characteristics: a central wavelength of 1.564.5 nm and 11.4 It is a light source with a spectral width of nm. 10 14. According to claim 1, a light generator (10) has the characteristic of being in the temperature range of -40°C to +80°C. It is a light source with wavelength stability of 7.1 ppm.

15. According to claim 1, a light generator (10) is present, and its characteristic is that with the said light generator (10) high a process of producing light with sufficient power; - A pump driven by a temperature controller with a driving current of 400 mA. 15 producing light pumped by laser (1) at wavelength of 980 nm, - The output fiber of the pump laser (1) is wavelength divided by optical arc fusion method. The multiplexer (2) is combined with the pump inlet port and the light at a wavelength of 980 nm, transfer to wavelength division multiplexer (2), - The wavelength division multiplexer (2) transmits light at a wavelength of 980 / 1.550 nm. The input fiber that allows gain fiber (3) to the input fiber by optical arc fusion method combining, - by absorption of light at wavelength of 980 nm in the aforementioned gain fiber (3) Ions are excited and spontaneous emission occurs at a wavelength of 1,550 nm. - The light coming from the output of the gain fiber (3) is returned to the gain fiber (3) 25 Directing the feed to the Faraday converter mirror (4), - the 1.550 nm wavelength light obtained from the double-pass structure, mentioned Transmission to the output fiber of the wavelength division multiplexer (2), - wavelength division multiplexer (2) output fiber light 1-2 meters Filtering without requiring additional components through a filter fiber (5) of length 30 It consists of steps.

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