PURPOSE: An overlay for controlling a refractive index, an inline variable attenuator using the same, and an attenuating method thereof are provided to reduce the insertion loss and widen a range of attenuation by using an inline structure. CONSTITUTION: An optical attenuation unit is formed with ...
attenuator plate 62 and out through a port in the side of the interferometer enclosure 18. This beam can be steered to either a collimating telescope (not shown) or to a translation detector (not shown) which are used only during setup of the apparatus 10. The other recombined beam B is...
Manually Adjust Low PDL In-Line PM VOA Singlemode Metal Fiber Optic Variable Attenuator with FC/APC Connector $124.00 - $125.00 Min. order: 2 pieces Easy Return Plug-in CWDM 12 CH MUX $60.00 Min. order: 1 piece Easy Return 1550nm Optical 3 Paddle Polari...
19. The optical fiber communication system in accordance with claim 9, wherein the pumping light source is provided with a variable attenuator on an output side of a polarization multiplexing Fabry-Perot laser diode to adjust an output of the pumping light from each Fabry-Perot laser diode. Des...
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Compactly integrated 8-channel variable optical attenuator with in-line tap monitor on planar lightwave circuitDoi, YHashizume, YKaneko, AOgawa, IKohtoku, MSuzuki, S
An inline single-mode fiber attenuator (10) is disclosed which may be formed by a tandem combination of a birefringent polarization- preserving fiber (12) and a single polarization fiber (14). The birefringent fiber functions as a variable wave plate and the single polarization fiber functions ...
All the span length used was 80 km (loss of 16 dB), but the span losses varied from 28 to 34 dB according to some additional loss elements, e.g., dispersion-compensating fiber and a variable optical attenuator. The measured Q-factors of the 16 channels after 1040 km (12.7–14.5 dB)...
essential to the practice of the present invention, since any rotation at splice S will still allow a variable attenuator to be constructed which varies in relation to the birefringence present in fiber section 12. For angles of rotation other than 45 degrees, maximum transmission may still be ...