Product Overview

    The D1x1 Manual Dual-Push Normally Closed Optical Switch with Integrated Splitter is a highly specialized fiber optic component designed for applications requiring both optical switching and signal splitting in a single, compact, and purely mechanical package. Manufactured by Coreray (www.coreray.com), a leading optical switch manufacturer in China, this device combines a dual‑actuation mechanical optical switch with two built‑in splitters (50/50 and 1/99) to offer a unique solution for secure, fail‑safe, and maintenance‑free fiber networks.

    Unlike electronic switches that rely on power, this passive fiber optic switch operates entirely through manual dual‑push mechanism, ensuring zero power consumption and intrinsic safety in explosive or remote environments. The normally‑closed (NC) design guarantees that the optical path remains interrupted until both buttons are deliberately pressed simultaneously, making it ideal for dual‑confirmation scenarios in security, sensing, and test systems.

Key Features

· Dual‑Push Normally‑Closed (NC) Mechanical Switch
The optical path is open by default and closes only when both ends are pressed together. A single press or release of either button instantly breaks the circuit, providing a fail‑safe, tamper‑proof operation. The 2mm actuation stroke and strong return spring ensure reliable, long‑term mechanical stability.

· Integrated Dual Splitters
Two independent splitters are embedded inside the same housing: a 50/50 (equal splitting) and a 1/99 (tap) splitter. This allows simultaneous monitoring or distribution of the optical signal while maintaining the switching function – all in one device.

· High Optical Performance
Low insertion loss (<0.40 dB typical), high return loss (≥55 dB), and excellent crosstalk isolation (≥55 dB) ensure minimal signal degradation, making it suitable for both laboratory and field applications.

· Rugged & Environmentally Robust
Housed in a dark‑red aluminum alloy case, the switch withstands harsh conditions with an operating temperature range of -40°C to +85°C. The compact footprint (80×44×20 mm) allows easy integration into panels or enclosures.

· Passive & Maintenance‑Free
No external power supply or electronics – purely mechanical actuation. This eliminates electromagnetic interference (EMI) concerns and guarantees long‑term reliability.

How It Works

Optical Switch Section

· Initial state: Normally closed – light path is interrupted.

· Actuation: When both buttons are pressed simultaneously, the internal mechanical structure shifts, aligning the fibers and allowing light to pass through.

· Release: If either button is released or not pressed at the same time, the internal spring returns the mechanism to the open state, breaking the optical path instantly.

Splitter Section

· The incoming optical signal is first routed through the switch. Once the switch is activated, the light enters the integrated splitters:

o    50/50 splitter – equally divides the signal into two outputs.

o    1/99 splitter – taps 1% of the signal for monitoring or low‑power applications while passing 99% to the main output.

· Both splitter outputs are controlled synchronously by the switch: when the switch is open, all outputs are dark; when closed, both splitter outputs receive light simultaneously.

This unique integration saves space, reduces insertion loss compared to cascaded components, and simplifies cabling in complex fiber systems.

Applications

· Fiber Optic Sensing Systems
Ideal for applications requiring manual triggering or dual‑operator safety protocols, such as perimeter intrusion detection, structural health monitoring, or oil & gas pipeline sensing.

· Security & Surveillance Networks
Acts as a physical trigger in fiber‑based alarm systems. The dual‑push feature prevents accidental alarms and ensures that only authorized personnel can activate the optical path.

· Optical Communication Testing & Protection
Used in lab setups or field tests for switching between different measurement paths or protecting sensitive equipment. The integrated splitter allows simultaneous monitoring of the signal without extra components.

· Special Control Scenarios
Any situation that demands two‑person confirmation or protection against unintended operation – e.g., military communication links, nuclear facilities, or high‑security data centers.

Technical Specifications