1550nm Singlemode Coupler (GK-SMC Series)
description1
Specifications
Parameter |
Unit |
Value |
Center Wavelength (λc) |
nm |
1550 |
Operating Wavelength |
nm |
λc ± 15 |
Coupling Ratio |
% |
25/25/25/25 |
Max. Insertion Loss |
dB |
7.0 |
Max. PDL |
dB |
0.2 |
Max. Uniformity |
dB |
1.0 |
Max. Excess Loss |
dB |
0.15 |
Thermal Stability |
dB/℃ |
≤ 0.005 |
Min. Return Loss |
dB |
55 |
Min. Directivity |
dB |
55 |
Max. Average Optical Power |
W |
3 |
Max.Peak Power for ns Pulse |
kW |
1 |
Fiber Type |
- |
SMF-28 Fiber |
Operating Temperature |
℃ |
- 40 to +105 |
Storage Temperature |
℃ |
- 40 to +85 |
¹IL is 0.5 dB higher, RL is 5 dB lower for each connector added. |
Package Dimensions

product description
The 1550nm Singlemode Coupler from the GK-SMC Series by GKER Photonics is engineered to deliver exceptional performance in optical communication systems. This high-quality coupler features low insertion loss and minimal polarization dependence, ensuring efficient and reliable signal transmission. Designed specifically for the 1550 nm wavelength with a tolerance of ± 15 nm, it offers precise coupling ratios ranging from 50/50 to 1/99, providing excellent uniformity across its operational range.
The coupler is built with superior environmental stability, capable of withstanding a broad range of operating temperatures from -40°C to +105°C, and exhibits minimal excess loss, making it ideal for demanding applications. It handles peak optical power of up to 1 kW for nanosecond pulses, supporting high-performance requirements in various optical setups.
Its robust design ensures high thermal stability with a maximum variation of ≤ 0.005 dB/°C, and it maintains excellent return loss and directivity, ensuring superior performance in power splitting and monitoring functions. Suitable for a variety of optical communication systems, including telecom networks and data center infrastructures, the GK-SMC Series coupler is a reliable choice for precise and efficient optical signal management.