RU188916U1 - Fiber Optic Relay - Google Patents

Abstract

The invention relates to devices for fiber-optic data transmission lines and can be used as a device for interrupting an optical signal. The claimed relay of the fiber-optic communication line consists of a case in which a key block is installed, and the first and second tips are mounted from opposite ends. An optical fiber for the input signal and a side facing the inside of the body is placed in the first tip, a first collimating lens is installed, and an optical fiber for the output optical signal is placed in the second tip and a second collimating lens is installed from the side facing the inside of the body. The key block is located between the first and second tips and consists of a sleeve, to the lower base of which a board with two contacts is attached, to which the first and second electrodes are soldered. The key block also includes a key base 1.6 μm thick, made in the form of a heterostructure on a silicon oxide substrate consisting of alternating alternating Cr / Cu / Cr layers adjacent to each other, and glued to the board, and a movable flexible elastic cantilever key of 1 μm formed by the detached edges of the upper layers of the heterostructure with the same name. The first and second collimating lenses, the cantilever key, the optical fiber for the input signal, and the optical fiber for the output signal are aligned coaxially with each other. The technical result is the provision of interruption of the optical signal in one data channel without the possibility of its transmission in another channel. 2 Il.

Description

The invention relates to devices for fiber-optic data transmission lines and can be used as a device for interrupting an optical signal.

Known switches optical signals, designed to close one channel of transmission of optical signals with the simultaneous opening of another channel of transmission of optical signals. One of the principles of such switches is based on the movement of a cantilever that is activated electrostatically. For example, known MEMS switch [Uvarov I.V., Naumov V.V., Koroleva OM, Vaganova E.I., Amirov I.I. MEMS switches of electrostatic type with low voltage operation. Proceedings of FTIAN, M .: Nauka, 2017, V. 26, P. 55-63]. The switch is a single-pole key with normally open contacts. The metal cantilever is located above the control and switched electrodes (also metal). At the free end of the cantilever is a contact ledge. When a voltage is applied between the cantilever and the control electrode, the cantilever is attracted to the electrode by electrostatic forces, closing the switched electrode. After switching off the voltage, the cantilever returns to its original state. In such a switch is a metal-to-metal contact. The cantilever is made with a contact protrusion in the form of a semiconductor multilayer structure of Cr / Al / Cr layers with thicknesses of 10/60/10, 15/90/15 and 20/120/20 nm on the oxide substrate.

Such a switch and similar devices interrupt the transmission of an optical signal in one data channel, but at the same time open another channel to transmit it.

Devices are known that redirect optical signals from one data channel to another. For example, a known optical switch consisting of a platform and an optical fiber, which is installed in a V-shaped groove. The switch element is located on the platform. The switch consists of a platform on which a cantilever is installed, a frame is installed on the cantilever, into which the mirror is placed. A pair of electrodes mounted on the platform. When a voltage is applied between the electrode and the cantilever, an electrostatic force occurs, and the mirror mounted in the cantilever frame moves in the vertical direction [US20050025412 (A1), IPC 1-7: G02B6 / 3514, publ. 02.03.2005].

Thus, the known switches of the optical signal do not implement the interruption of the optical signal as such, but implement the switching of the optical signal between the channels.

Known micro relay intended to close the circuit of direct currents or the transmission channel of microwave waves [eg L. Belov, M. Zhitnikova, Microelectromechanical components of the radio frequency range // Electronics: NTB, 2006, № 8, P.18-25]. One of the groups of such micro-relays are classic micro-relays with a resistive connection. Such micro-relays consist of a coplanar waveguide, a membrane that acts as a cantilever located above the waveguide, a control electrode, an actuator, and contact pads. The membranes are made of materials with high conductivity for radio frequency signals. The central electrode provides a control signal, and also serves as a plate for a capacitor formed by the signal line and the ground plane. The membrane moves up and down under the influence of the control electrostatic field, providing overlap and opening of the waveguide.

Such devices implement interruption of signal transmission without switching it to another channel, but not an optical signal.

A technical problem is to create a fiber optic device for interrupting an optical signal.

The technical problem is achieved by the fact that the relay of a fiber-optic communication line consists of a housing in which a key block is installed, and the first and second tips are mounted from opposite ends, while the first tip contains an optical fiber for the input signal from the side facing the inside , the first collimating lens is installed, and in the second tip there is an optical fiber for the output optical signal and from the side facing the inside of the body, the second collimating lens is mounted, and the key block is located between the first and second handpieces and consists of a sleeve, to the lower base of which a board with two contacts is attached, to which the first and second electrodes are attached to the base plate of the key 1.6 μm thick, made in the form of a heterostructure on an oxide substrate silicon formed by alternating alternating layers of Cr / Cu / Cr, and a movable flexible elastic cantilever key with a thickness of 1 μm, formed by detached like edges of the upper layers of the heterostructure, and the first and second count Ymir lens cantilever key fiber optic input and fiber optic output are aligned with each other.

The technical result is to provide an interruption of the optical signal in one data channel without the possibility of its transmission in another channel.

FIG. 1 shows a fiber optic relay in section.

FIG. 2 shows a key block for a fiber-optic relay link in section.

Relay fiber-optic communication line includes a housing 1, two tips 2 and 3, the optical fiber 4 for the input signal, the optical fiber 5 for the output signal, two collimating lenses 6 and 7, the key block 8.

The tips 2 and 3 are installed in the housing opposite each other. An optical fiber 4 for the input optical signal is placed in the tip 2, and a collimating lens 6 is installed on the side facing the inside of the body. An optical fiber 5 for the output optical signal is placed on the tip 3 and a collimating lens 7 is mounted on the side facing the inside of the body 7. Block Key 8 is installed in the case.

The key block 8 consists of a sleeve 9, to the lower base of which is attached a board 10 with two contacts, to which electrodes 11 and 12 are soldered, the base of the key 13 and the cantilever of the key 14.

The key is made in the form of a multilayer semiconductor heterostructure on a substrate of silicon oxide SiO ₂ . A multilayer semiconductor heterostructure consists of repetitive Cr / Cu / Cr layers adjacent to each other at one edge. Several upper layers of the heterostructure from the other edge are peeled off. The peeled edges form a movable flexible elastic cantilever of the key 14, and the non-peeled part of the heterostructure forms the base of the key 13.

The base of the key 13 is glued to the plate 10. The thickness of the interelectrode gap is about 0.8 microns.

The thickness of the cantilever and the base of the key correlate with each other as 1: 1.6.

The collimating lenses 6 and 7, the cantilever key 14, the optical fiber 4 for the input optical signal and the optical fiber 5 for the output optical signal are aligned coaxially with each other.

The device works as follows. An optical signal is fed to the optical fiber 4 for an optical input signal from an external source, which is transmitted to the collimating lens 6 and converted into a collimated beam.

If a constant voltage is applied to the key board 10 from an external power supply, then an electrostatic attraction force arises between the cantilever key 14 and the base of the key 13. As a result, the cantilever key 14 is pressed against the base of the key 13, allowing the optical signal to reach the collimating lens 7 without hindrance. The collimating lens 7 then introduces the optical signal into the optical fiber 5.

If a constant voltage is not supplied to the key board 10 from the external power supply, then an electrostatic attraction force does not occur between the cantilever key 14 and the base of the key 13. As a result, the cantilever key 14 is not pressed against the base of the key 13 and does not allow the optical signal to reach the collimating lens 7.

Thus, the interruption of the optical signal in the data transmission channel without the possibility of its transmission in another channel is realized.

The proposed relay of the fiber-optic communication line is characterized by speed due to the flexibility and elasticity of the cantilever made of a semiconductor heterostructure. The flexibility and elasticity of the cantilever is achieved due to the ratio of the base thicknesses of the key and the key cantilever as 1.6: 1, as well as due to the appearance of elastic stresses between the chromium and copper layers of the semiconductor heterostructure. Also, the relay of the fiber-optic communication line is characterized by vibration resistance due to the absence of moving mechanical parts and the elasticity of the layers of the semiconductor heterostructure.

Claims (1)

Relay fiber-optic communication line, consisting of a case in which a key block is installed, and the first and second tips are mounted from opposite ends; An optical fiber for the input signal is placed in the first tip, and a first collimating lens is installed on the side facing the inside of the body, and an optical fiber for the output optical signal is placed in the second tip, and a second collimating lens is mounted on the side facing the inside of the body; the key block is located between the first and second handpieces and consists of a sleeve, to the bottom base of which a board with two contacts is attached, to which the first and second electrodes are attached to the base board of the key 1.6 μm thick, made in the form of a semiconductor heterostructure on a silicon oxide substrate formed by alternating alternating layers of Cr / Cu / Cr adjacent to each other and a movable flexible elastic cantilever of a key 1 μm thick formed by detached like edges of the upper layers of a heterostruc kturs; and the first and second collimating lenses, the cantilever of the key, the optical fiber for the input signal and the optical fiber for the output signal are aligned with each other.

Images