How Hirundo Delivers Optical Switch Protection and High-Performance Switching for Modern Optical Networks
Optical switches are essential devices that physically route optical signals in transmission lines or integrated optical circuits. Widely used in optical network protection, system monitoring, and path selection, they are key building blocks for reliable and intelligent optical networks. Among the various implementations, mechanical optical switches and MEMS optical switches have become the two most mainstream technologies due to their mature design and stable performance. Hirundo Optics offers both product lines, enabling network architects, equipment manufacturers, and testing labs to select the optimal switching solution for their specific application.
Understanding the 2×2 Optical Switch Principle
A common example of optical switching is the 2×2 port configuration. In Hirundo's 2×2 optical switch based on MEMS technology, a micromirror controls the light path. When the micromirror is not inserted into the optical path, light from waveguide 1 couples into waveguide 3, and light from waveguide 2 couples into waveguide 4, creating the straight-through state (1→3 and 2→4). When the micromirror is inserted, the beams are reflected and cross-coupled to ports 4 and 3 respectively, resulting in the cross state (1→4 and 2→3). This simple yet efficient principle enables rapid, reliable switching in modern optical networks.
Mechanical Optical Switches: Classic and Reliable
Hirundo's mechanical optical switches use micro-motors, electromagnetic relays, or movable fiber mechanisms to physically displace reflectors, prisms, or fiber ends, thereby switching the optical path. Common configurations include 1×1, 1×2, 1×N, 2×2 and 2×2B. For example, a 2×2 mechanical optical switch driven by an electromagnetic relay uses positive or negative voltage control: +5V retracts the reflector for the straight-through state, while −5V inserts the reflector for the crossed state. Mechanical optical switches offer mature technology, controllable cost, low insertion loss, and high durability, making them ideal for low-frequency switching scenarios such as network monitoring, device testing, and OADM/OXC dynamic configuration.
MEMS Optical Switches: Precision and High Efficiency
Hirundo's MEMS optical switches are based on micro-electro-mechanical systems. They use electrostatic or magnetic forces to tilt tiny micro-mirrors, changing the beam direction to switch optical paths. This advanced approach delivers millisecond-level switching speed, miniature size, high integration, low insertion loss, low crosstalk, and excellent reliability. MEMS switches are ideal for high-density optical switch matrices, miniaturized test equipment, and rapidly growing applications such as OXC core switching. With durability ratings of up to 10⁹ cycles, they are designed for long service life in demanding environments.
Hirundo's Optical Switch Portfolio for Protection and Performance
Hirundo offers a comprehensive portfolio of optical switches that provide both protection and high-performance switching. From 1×N mechanical switches supporting 10 to 128 channels to 2×2B compact latching/non-latching switches, from 1×N MEMS switches with driver boards to bypass and OBS optical switches for fault protection, each product is engineered to deliver low insertion loss, high isolation, low crosstalk, and stable repeatability. All switches undergo full testing of repeatability, insertion loss, crosstalk, and service life cycles before delivery. Customization options include channel count, polarization-maintaining pigtails, package dimensions, electrical control interfaces, connector types, and wavelengths from 780 nm to 1610 nm.
Protecting Network Reliability with Bypass Solutions
Optical switch protection is critical for ensuring uninterrupted network service. Hirundo's bypass optical switches automatically identify power supply status, optical signal output status, and software operation status of network nodes. They provide power-failure bypass, no-optical bypass, and heartbeat-signal bypass functions, protecting flow-control equipment and repeater optical equipment. The OBS optical switch, with latching and non-latching options, provides straight and bypass insertion loss as low as 1.0 dB and 1.6 dB respectively, ensuring fast and lossless optical-layer protection switching.
Beyond Switching: Passive Components for OTN/WDM Networks
Hirundo also supplies key passive components that complement optical switching in OTN/WDM backbone networks. These include DWDM/CWDM multiplexers supporting more than 96 wavelengths per fiber with insertion loss below 0.3 dB, Faraday-rotator-based optical isolators providing >40 dB reverse isolation, and 1×N optical splitters with ±0.5 dB accuracy. By advancing anti-nonlinearity design, wide-temperature stability (−40°C to 85°C), and intelligent integration such as WDM+isolator+splitter 3-in-1 modules, Hirundo helps enable next-generation networks with ultra-high capacity, flexible scheduling, high reliability, and low power consumption.
Customized Solutions for Diverse Applications
Whether you need a standard mechanical switch for simple path routing, a MEMS switch for high-speed high-density matrices, or an integrated protection module for multi-channel fault switching, Hirundo provides reliable, high-performance optical switching components. With dual product lines and strong customization capabilities, Hirundo supports optical network monitoring, device testing, OXC equipment core switching, data centers, and intelligent optical networks—always with a focus on optical switch protection and long-term stability.
