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Converter Product List

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High-speed O/E Converter for Short Wavelengths "SPD Series"

We will convert your electronic measuring instrument into an optical measuring instrument! By attaching it to the input terminals of your oscilloscope or spectrum analyzer, you can easily achieve optical measurements!

It transforms your electronic measuring instrument into an optical measuring instrument. By attaching it to the input terminals of your oscilloscope or spectrum analyzer, you can easily achieve optical measurement. Its compact size fits in the palm of your hand. Weighing only about 130 grams, it is very lightweight, so it does not put a strain on the input connector. 【Features】 ■ Transforms electronic measuring instruments into optical measuring instruments ■ Achieves optical measurement by attaching to oscilloscopes and spectrum analyzers ■ Weighs only about 130 grams, making it very lightweight *For more details, please request documentation or view the PDF data available for download.

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E/O Converter LL Series

Custom production of other wavelengths is also possible.

An O/E converter is a device that converts optical signals into electrical signals. Conversely, our E/O converter receives output signals from devices such as sweep generators and outputs modulated laser light from the optical output connector. The E/O converter is equipped with a 405nm LD model LL-400GI, and we offer E/O converters for other wavelengths including 658nm, 780nm, 830nm, and 1310nm, with the possibility of custom manufacturing for other wavelengths as well.

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Long Wavelength O/E Converter LPD Series

Equipment for easily observing light signals from 900[nm] to 1650[nm].

■Photodetector: InGaAs PIN PD ■Receiving Wavelength Range: 900[nm] to 1650[nm] (LPD-1) 950[nm] to 1650[nm] (LPD-2) ■Compatible Fiber Diameter: 80[um] or less (LPD-1) 500[um] or less (LPD-2) ■Receiving NA Range: Up to 0.2 (LPD-1) Up to 0.25 (LPD-2) ■Receiving Sensitivity: 500[mV/mW] @1310[nm] (LPD-1) 1000[mV/mW] @1310[nm] (LPD-2) ■Frequency Bandwidth: DC to 1.5[GHz] (LPD-1, LPD-2)

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DC~1GHz, large diameter compatible OE converter SPA-2 650nm

Fiber with NA=0.5 and a core diameter of 1[mm] is available, achieving a bandwidth of DC to 1.0[GHz] simultaneously!

- Ideal for testing POF, MOST devices, IDB-1394 devices, and gigabit Ethernet devices using POF. - Excellent light collection performance: Capable of capturing 100% of the emitted light from POF with a numerical aperture of 0.5 and a core diameter of 1.0 mm. - Wide bandwidth: Conversion frequency range from DC to 1.0 GHz. - Operates on a single power supply of +12V to +18V. - Supports all SC, ST, F05, and FC connectors by adopting a universal connector (model number: G_OCN, optional).

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High-sensitivity O/E converter for long wavelengths LPS-1

High-sensitivity O/E converter for long-wavelength measurement

- A new development of FET input type transimpedance has been achieved, realizing high sensitivity and low noise performance. - A wideband characteristic of 100 [MHz] for the 20 [kV/W] model and 15 [MHz] for the 100 [kV/W] model has been secured. - Upon request, we can also accommodate specifications for even higher conversion sensitivity. (Bandwidth, noise, and price are negotiable.)

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Optical system equipped with O/E converter

Observable with a standard oscilloscope! Suitable for ToF, LiDAR development, and waveform analysis.

We handle the 'O/E Converter' that transforms your company's electronic measuring instruments into optical measuring instruments. Equipped with a uniquely designed optical system, it captures light signals from large-diameter fibers and high NA fibers without loss. Additionally, by attaching it to the input terminals of your oscilloscope or spectrum analyzer, you can easily achieve optical measurements. Please feel free to contact us if you have any requests. 【Features】 ■ Compact and lightweight ■ Easy to attach and connect ■ Excellent light collection capability: equipped with a uniquely designed optical system ■ Wideband conversion from DC to GHz * For more details, please download the PDF or feel free to contact us.

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Long-wavelength OE converter 'LPD-1'

The passband is DC to 1.5GHz! It is possible to observe the intensity modulation components of optical signals.

The "LPD-1" is an OE converter that converts optical signals in the range of 900 to 1650 nm into electrical signals over a wide bandwidth. Simply attach this device to the signal input terminal of an oscilloscope or similar equipment, and connect a fiber optic cable carrying the optical signal you wish to observe to the optical input connector. You can observe the intensity modulation component of the input optical signal. Additionally, we also offer the large-diameter long-wavelength OE converter "LPD-2." 【Features】 <LPD-1> ■ For long wavelengths ■ Converts optical signals into electrical signals over a wide bandwidth ■ Passband: DC to 1.5 GHz ■ Conversion sensitivity: 500 mV/mW @ 1300 nm ■ Wavelength range: 900 to 1650 nm *For more details, please refer to the PDF document or feel free to contact us.

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OE Converter "SPD/SPA/LPD Series"

Just attach it to the input connector of the electronic measuring device! It transforms the electronic measuring instrument into an optical measuring instrument.

At Graviton Co., Ltd., we handle the OE converter 'SPD/SPA/LPD series'. By attaching it to the input terminals of your oscilloscope or spectrum analyzer, you can easily achieve optical measurement. It converts input optical waveforms into electrical output waveforms in a wide bandwidth, balancing a small body with a large light receiving diameter and receiving NA. It can be used for observing optical waveforms such as optical pickups and optical links. 【Features】 ■ Compact and lightweight ■ Easy attachment and connection ■ Excellent light collection capability ■ Wideband conversion from DC to GHz *For more details, please refer to the PDF materials or feel free to contact us.

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OE Converter "SPA Series"

An OE converter that can capture almost 100% of the emitted light from the fiber!

The "SPA Series" is an OE converter capable of capturing and observing all emitted light from large-diameter optical fibers such as GI-POF and high-speed POF. The optical system is entirely composed of our unique design. Starting with the "SPA-2_650nm," which adopts a universal connector compatible with SC, ST, F05, and FC connectors, we also offer the "SPA-3," suitable for observing blue laser pickups, and the "SPA-4," which supports wideband and multi-wavelength applications. 【Features】 ■ Capable of capturing and observing all emitted light from large-diameter optical fibers ■ The optical system is entirely composed of our unique design *For more details, please refer to the PDF document or feel free to contact us.

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OE Converter "SPD-1"

Transforming electronic measuring instruments into optical measuring instruments! Short-wavelength OE converter suitable for visible light laser observation.

The "SPD-1" is an OE converter that converts optical signals into electrical signals over a wide bandwidth. It is capable of observing the intensity modulation components of the input optical signal. It has a high collection capability that allows for observation in various fields, including CDs. Additionally, we offer "SPD-2," which is suitable for GI (high-speed) POF, as well as "SPD-3" and "SPD-4," which are compatible with multiple wavelengths. 【Features】 ■ For short wavelengths (visible light range) ■ Wide bandwidth ■ Available for 650nm and 850nm according to application ■ DC to 1.2GHz ■ Well-suited for observing red laser pickups and more *For more details, please refer to the PDF materials or feel free to contact us.

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O/E Converter Lineup

A wide variety of O/E converters that transform electronic measuring instruments into optical measuring instruments!

Graviton Inc.'s O/E converter allows for easy optical measurement by attaching it to the input terminals of your oscilloscope or spectrum analyzer. This document introduces five types of products, including the "SPD series," as well as the "SPA series," "SPS series," "LPD series," and "LPS series." You can choose a model based on the light reception wavelength range, reference wavelength, light reception area, light reception NA range, and conversion frequency bandwidth. Please use this information for product selection. [Contents] ■ Selection Guide ■ SPD Series (SPD-1_650nm, SPD-3, SPD-4, etc.) ■ SPA Series (SPA-2_650nm, SPA-3, SPA-4) ■ SPS Series (SPS-1, SPS-2) ■ LPD Series (LPD-1, LPD-2) ■ LPS Series (LPS-1, LPS-2) *For more details, please refer to the PDF document or feel free to contact us.

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OCT Differential O/E Converter "DLP-1"

Capable of receiving reflected light from deeper layers! A light-electric converter that achieves wide bandwidth and low noise.

The "DLP-1" is a dual balance differential amplifier type O/E converter. Designed for OCT applications, it achieves reduced end-face reflection, wide bandwidth, and low noise while being compact. You will notice a significant difference as the observation light intensity decreases. Additionally, it is a suitable product for SS-OCT imaging systems with a wide bandwidth of DC to 400MHz. 【Features】 ■ Reduced end-face reflection ■ Uses an FC receptacle compatible with APC polished fiber ■ Wide bandwidth: DC to 400MHz ■ Low noise: NEP below 5pW/Hz in the region below 100MHz ■ Dimensions: 60×60×23mm (excluding protrusions) *For more details, please refer to the PDF document or feel free to contact us.

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High-sensitivity type short-wavelength O/E converter SPS series

O/E converter. For observing discharge light of PDP and measuring light response of sensors.

For the observation of emitted light from optical communication devices, an O/E conversion sensitivity of several hundred V/W is not required to be very high. On the other hand, high conversion sensitivity is necessary for observing discharge light from PDPs and for optical measurement applications. The SPS series has been developed to achieve high conversion sensitivity with low noise while securing a certain bandwidth by newly designing the first stage TIA and providing two models with variations in the optical system.

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High NA fiber compatible short wavelength O/E converter SPA series

Ideal for increasing the NA of fibers centered around plastic fiber.

In the SPD series, in order to capture emitted light from a fiber with as large a diameter as possible while using a PD with a small light-receiving diameter, the reduction ratio of the light-receiving optical system was set to 0.4 times. This allowed for the projection of emitted light from a fiber with a core diameter of 500 [µm] onto a PD light-receiving surface with a diameter of 0.2 [mm]. As a result, the maximum fiber NA value that could be received was limited to 0.25. In the SPA series, by changing the reduction ratio of the light-receiving optical system to 0.8 times, the maximum receiving NA was increased to 0.5. For example, using a PD with a receiving diameter of 0.8 [mm] in the SPA-2 at 650 nm, we successfully captured emitted light from a plastic fiber with a core diameter of 1 [mm] and NA=0.5, while maintaining a bandwidth from DC to 1.0 [GHz] during O/E conversion.

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VCSEL搭載の広帯域E/OコンバーターVL-850GI

CWレーザー光源、通信機器、産業用電子機器に最適!

VL-850GIは入力された電気信号で強度変調された光信号を発生するE/Oコンバーターです。スイープジェネレーターやファンクションジェネレーターの信号出力端子に本器を装着し、信号を入力することにより、本器の光出力コネクターから変調されたレーザー光が出力されます。 変調信号の入力が無い場合のVL-850GIの光出力は、50/125タイプのGIファイバーを装着した場合に、ファイバー端で0.2[mW]以上のCW光となります。従って特に変調された光源が必要でない場合にも、CW光源として本器をご使用いただけます。

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