Ultra-Miniaturized Hybrid Devices for Erbium-Doped Fiber Amplifiers(EDFA)

 With the wide application of EDFA(Erbium-Doped Fiber Amplifier) in ROADM, silicon photonics, and DCI high-speed connection, it has promoted the development of EDFA to become more miniaturized and integration. HYC has been engaged in the research and manufacture of optical passive devices for more than 20 years, always focusing on technology accumulation and innovation, with six core technical capabilities, and can provide customers with seven major solutions. 

In order to meet the needs of EDFA (Erbium-Doped Fiber Amplifier) applications, HYC has recently launched hybrid series product for the miniaturized EDFA. The product line includes 980/1550nm IWDM Hybrid (Isolator+WDM), GFF (Gain Flattening Filter), IGFF (Isolator + GFF), etc..

Traditional EDFA system is mainly composed of erbium-doped fiber, pump source, isolator, combiner, coupler, TAP PD and control circuit. N in 1 hybrid device can combine isolator, WDM, GFF, TAP in one component but with the same functions. Now HYC can provides 980/1550 IWDM, 980/1550 Mini IWDM, TIWDM, IGFF, and OSC WDM etc., which are widely used in EDFA, light source equipment. 

The package size of the hybrid device is smaller. For example, IWDM integrates the functions of isolator and WDM, but the size is φ2.5*22mm (steel pipe), and the cost of module products is reduced by 30%.

Features:

1.Compact size, the size of Mini IWDM (steel pipe) is φ2.5*22mm

2.High stability, typical value of reflected IL ≤0.15dB, typical value of transmitted IL ≤0.3dB（-5~+75℃）

3.Meet with 168-hour experiment (tested at 120 ° C, 2 atmospheres, 100% humidity)

4.Fully meet the reliability requirements of Telcordia GR-1221-CORE

Product example 1: 1x2 WDM and optical isolation hybrid device (IWDM)

The functional diagram of 1×2 WDM and isolator hybrid device is used for EDFAs with high isolation requirements, which can not only ensure the optical isolation requirements, but also reduce the size of the entire EDFA module.  The pump light can also be incident on the EDF (Erbium-doped fiber) from the fiber 2 to realize the optical amplification function.

Product example 2: Optical isolation and gain flat filter (GFF) hybrid device

The integrated device not only decrease size of module, but also realize the function of isolation, and gain flat filter.

HYC has five product lines: fiber connectivity, WDM, PLC splitters, high-speed transceiver optical subassembly, micro-optics device, and six technology platforms:

1. Optical design, simulation and ray tracing capability based on Zemax, Matlab and Mathcad;

2. Free space optics design, submicron alignment / coupling/assembly capabilities;

3. High precision mechanical design, mold and injection design & precision manufacturing capabilities;

4. High density parallel optics Design and manufacturing capabilities (such as FA fiber array &MPO and integration with isolators, etc.);

5. Optical substrate and wafer post-processing capabilities, and the corresponding capabilities for analyzing optical glass geometry and stress;

6. Automatic precision assembly and testing ability, software programming ability. 

HYC can also provides customers with seven solutions:

1. Parallel optics solutions to AOC/DCI

2. Multi-channel WDM optical engines for DCI

3. Passive optical solutions to coherent optics/Silica photonics 

4. Passive solutions used for EDFAs

5. DCI Connectivity Solutions

6. WDM Subsystem/system Solutions

7. FTTX/PON Solutions

Michelson Interferometers Components for Signal Detection in 5000m Deep Sea

 With the gradual advancement of the national marine strategy, the deep-sea applications of optical fiber hydrophones have becoming more and more extensive with higher requirements of the reliability. Based on six basic technology platforms, HYC has launched a series of Michelson interferometers that can be used in deep sea hydrophones. The product line includes FRM (Faraday Rotating Mirror) and Coupler devices featuring ultra-miniaturized packing, ultra-high reliability. It is ideal for fiber optic interferometric sensor systems for deep-sea 5000m signal detection.

 

Based on basic packaging process and materials technology and glue & stress models technology, the stability of FRM and coupler can be greatly improved. After 48 hours of continuous high-strength hydraulic test (45MPa), pressure fatigue test (low pressure 0MPa ~ high pressure 6.75MPa), 72 hours PCT test (120 ℃, 2 atmospheres, 100% humidity) and a series of mechanical tests, the IL variation of the experimental product is still within 0.5dB.

HYC provides two versions to meet different needs, one is miniaturized + ultra-high reliability version, another is ultra-miniature version. The package sizes of the first miniaturized + ultra-high reliability FRM and coupler are φ3.0x12 mm and φ3.0x40 mm respectively. The package sizes of second ultra-miniature FRM and coupler are φ2.5x12 mm and φ2.5x30 mm respectively, which is ahead of most similar products on the market, and can also meet environmental and mechanical experiments required by Telcordia GR-1209 /1221.

The Michelson Interferometers components provided by HYC not only ensure low loss, ultra-high reliability, and ultra-miniaturization, but also adopt a low-cost strategy to reduce costs through functional integration, and truly providing customers with competitive product solutions.

HYC has always pay high attention to R&D investment and has a professional R&D team, owns a number of domestic and foreign patents and has a comprehensive six core technology platforms.

1. Optical design, simulation and ray tracing capability based on Zemax, Matlab and Mathcad;

2. Free space optics design, submicron alignment / coupling/assembly capabilities;

3. High precision mechanical design, mold and injection design & precision manufacturing capabilities;

4. High density parallel optics Design and manufacturing capabilities (such as FA fiber array &MPO and integration with isolators, etc.);

5. Optical substrate and wafer post-processing capabilities, and the corresponding capabilities for analyzing optical glass geometry and stress;

6. Automatic precision assembly and testing ability, software programming ability. 

About HYC

Founded in 2000, HYC is a leading global manufacturer of innovative and reliable optical components. HYC designs, develops, manufactures, and sells a comprehensive line of passive optical devices that enables 4G/5G, data center, data communication, FTTH, aeronautical communication networks.

HYC launches ultra-small Hybrid devices for EDFA

 In order to meet the needs of EDFA (Erbium-Doped Fiber Amplifier) applications, HYC has recently launched hybrid series product for the miniaturized EDFA. The product line includes 980/1550nm IWDM Hybrid (Isolator+WDM), GFF (Gain Flattening Filter), IGFF (Isolator + GFF), etc..

Based on the optical simulation design technology and fiber mode field beam expansion technology, the IL of hybrid device can be greatly reduced and its performance stability can be improved. The typical value of reflection IL can be controlled below 0.15dB (-5~+75℃), and the typical value of transmission IL can be controlled at 0.30dB (-5~+75℃). HYC has extensive experience in basic packaging processes and stress models for glue & materials, which greatly contribute to the reliability and robustness of products. All hybrid devices fully meet the reliability requirements of Telcordia GR-1221-CORE, and meet the 168-hour PCT experiment (tested at 120 ° C, 2 atmospheres, 100% humidity).

Now we have two versions, one is miniaturized + ultra-high reliability version( fully meets PCT test), another is ultra-miniature  (φ2.5xL19mm) version, which can also meet the requirements of GR-1221-CORE.

The EDFA components provided by HYC not only ensure low loss, ultra-high reliability, and ultra-miniaturization, but also adopt a low-cost strategy to reduce costs by 30% through functional integration, and truly providing customers with competitive product solutions.

HYC has always pay high attention to R&D investment and has a professional R&D team, owns a number of domestic and foreign patents and has a comprehensive six core technology platforms.

1. Optical design, simulation and ray tracing capability based on Zemax, Matlab and Mathcad;

2. Free space optics design, submicron alignment / coupling/assembly capabilities;

3. High precision mechanical design, mold and injection design & precision manufacturing capabilities;

4. High density parallel optics Design and manufacturing capabilities (such as FA fiber array &MPO and integration with isolators, etc.);

5. Optical substrate and wafer post-processing capabilities, and the corresponding  capabilities for analyzing optical glass geometry and stress;

6. Automatic precision assembly and testing ability, software programming ability. 

High-speed transceiver parallel optics MT subassembly

 With the growth of global data volume, parallel optical technology is an important technical for the expansion of current data centers, and the optical transmission rate has continuously evolved from 10Gbps, 40Gbps, 100Gbps to 200Gbps, 400Gbps, and even 600Gbps, 800Gbps. At this year's OFC conference, a number of Chinese suppliers have successively demonstrated 800G rate optical modules, which means that 800G will enter a new era.

What is parallel optics? Parallel optical technology is a special optical communication technology that transmits and receives signals at both ends of the link. Parallel optical transceiver modules are usually used to achieve high-speed signal transmission at both ends. Parallel optical technology is a cost-effective solution for 4×50G, 8×50Gbps transmission.

In parallel optical signal transmission, the parallel optical modules at both ends of the link contain multiple transmitters and receivers. Multiple optical fibers are used to transmit and receive signals. The data rate of multiple-channels parallel transmission can support 40G to 100G per second. As shown in the figure, 8-bit data is simultaneously transmitted through parallel lines, so that the data transmission speed is greatly improved. Multimode parallel technology is mostly used for short-distance transmission of 100G and below.

 

Parallel optical modules rely more on high integration and small packaging to generate less heat than multiple discrete devices. MT (MPO) ferrules and optical subassemblies are one of the key components supporting parallel optical interconnects, which are used to connect internal optical lenses and external optical interfaces, and can be integrated into optical module boards. The small size and multi-channel of the MT ferrule makes it easy to use as an external optical interface in the parallel transmission.

Relying on high-density parallel optics design and manufacturing capabilities, as well as high-precision mold manufacturing and measurement technology capabilities, HYC now has the mass production capacity of high-speed transceiver optical subassemblies.

MT-Jumper

The ferrules of MT-jumper are available in 0° and 8° polishing angles. The length tolerance can be customized, and the minimum can meet ±0.15mm.

 

MT-2×Mini MT

Due to the compact internal structure of some optical modules, the traditional MT ferrule is bulky and may not be able to be inserted into the transceiver. Mini MT ferrules are the right devices to use in this small space connection, which are half the size of traditional MT ferrules.

 

MT-FA

MT-FA is a short fiber jumper composed of MT and fiber array. The end face angle of FA can be customized and it requires high precision. It is widely used in 100G PSM4 to connect to the external port.

 

About HYC Co., Ltd

With 22 years manufacturing experience of passive optical devices, HYC has three technical capabilities, passive optical devices chip packaging and coupling technology, precise mould/injection molding design and manufacture technology, and fiber array design and manufacture technology. HYC can provide one-stop customized services for passive devices design, R&D, manufacturing, with optical fiber connectors, patch cords, plc splitter, wdm, high-speed transceiver optical subassembly and mems optical switch production lines.